**Method 1 – Calculate Average Percentage Change Using Formula**

We can use the formula for average percent change to calculate the change in sales between two consecutive months. The formula for percent change is shown below.

The formula below is for calculating the average percentage change.

**Steps:**

- Enter the following formula in cell
**D6**to calculate the percentage changes in*Sales Volume*between the months of*January*and*February*.

`=(C6-C5)/C5 * 100`

**Formula Breakdown**

**C6** = **Sales Volume in February** = Final Value

**C5** = **Sales Volume in January** = Initial Value

**Note:**

We can not calculate the percentage change in sales for the month of

*January*as we do not have the

*Sales Volume*for the preceding month to consider it as an

*Initial Value*.

- Press
**ENTER**. It will output the percentage change in*Sales Volume*between the months of*January*and*February*.

- Drag the
**Fill Handle**of cell**D6**to apply the formula to the rest of the cells.

- It will output the percentage change in
*Sales Volume*between each month and the preceding month.

- Select all the cells with values under the
*Monthly Percentage Change*column, click on the**Decrease Decimal**button several times from the**Number**under the**Home**tab**.**Each click will decrease the decimal by one place.

- Each cell in the
*Monthly Percentage Change*will decrease to 2 decimal points.

- We will calculate the average percentage change using all the monthly percentage changes. Enter the following formula in cell
**D12**.

`=SUM(D6:D10)/COUNT(D6:D10)`

**Formula Breakdown**

- The
**SUM**function will sum up all the cell values in the range**D6:D10**. - And the
**COUNT**function will count all the cells in the range**D6:D10**.

- Press
**Enter**. It will output the average percentage change in*Sales Volume*for all the sales volumes for the 6 months.

**Read More: **How to Calculate Percentage Increase Between Three Numbers in Excel

**Method 2 – **Apply Percent Format to Calculate Average Percentage Change

**Steps:**

- Click on the
**Percent Style**button several times from the**Number**under the**Home**tab**.**It will change the numbers into percentages.

- Enter the following formula in cell
**D6**.

`=(C6-C5)/C5`

- Press
**ENTER**. The percentage change in*Sales Volume*between the months of*January*and*February*will be displayed.

- Drag the fill handle of cell
**D6**to**AutoFill**the formula to the rest of the cells.

- It will output the percentage change in
*Sales Volume*between each month and the preceding month.

- We will calculate the average percentage change using all the monthly percentage changes. Enter the following formula in cell
**D12**.

`=SUM(D6:D10)/COUNT(D6:D10)`

**Formula Breakdown**

- The
**SUM**function will sum up all the cell values in the range**D6:D10**. - The
**COUNT**function will count all the cells in the range**D6:D10**.

- Press
**ENTER**. The average percentage change in*Sales Volume*for all the sales volumes for the 6 months will be displayed.

- Instead of calculating the percentage change in sales between two consecutive months, we can also calculate the change in sales between
*January*and every other month. - Enter the following formula in cell
**D6**.

`=(C6-$C$5)/$C$5`

**Formula Breakdown**

We have inserted *Dollar ($)* signs in cell **C5** that represent the *Sales Volume* in the month of *January*. Inserting the *Dollar ($)* signs will make the cell reference absolute (**$C$5)**. So, if we now drag the fill handle downward, the cell reference** $C$5** will not change and the formula will always calculate the change in sales between January and every other month.

- Press
**Enter**. The average percentage change in*Sales Volume*between the month of*January*and*February*will be displayed.

- Drag the fill handle of cell
**D6**to apply the formula to the rest of the cells.

- It will output the percentage change in
*Sales Volume*between*January*and every other preceding month. - It will also output the average percentage change in
*Sales Volume*for all the sales volumes of the 6 months.

**Read More: **Calculate Percentage Difference Between Two Numbers in Excel

**Method 3 – **Run a VBA Code to Calculate Average Percentage Change

**Steps:**

- Select
**Visual Basic**from the**Developer**. We can also press**ALT+F11**to open it.

- Click on the
**Insert**button and select**Module**.

- Enter the following code in the module window.

```
Sub Average_Percentage_Change()
init_cell = InputBox("Insert the First Cell Reference (Ex. B5)")
num_cells = InputBox("How many values are there in the data range? (Ex. 10)")
result_cell = InputBox("Which cell will show the result? (Ex. D12)")
init_cell_num = Int(Right(init_cell, 1))
init_cell_letter = Left(init_cell, 1)
final_cell_num = Int(init_cell_num) + Int(num_cells) - 2
Sum = 0
For i = init_cell_num To final_cell_num
Range("D" & i + 1) = (Range(init_cell_letter & i + 1) - Range(init_cell_letter & i))
Range("D" & i + 1) = Range("D" & i + 1) / Range(init_cell_letter & i)
Range("D" & i + 1) = Round((Range("D" & i + 1) * 100), 2)
Next
For i = init_cell_num To final_cell_num
Sum = Sum + Range("D" & i + 1)
Next
Range(result_cell) = Round(Sum / (num_cells - 1), 2)
End Sub
```

- Click on
**Run**.

- A window with the prompt
*Insert the First Cell Reference (Ex. B5)*will pop up. We will insert cell**C5**in the input box as it has the first*Sales Volume.*

- Another window with the prompt
*How many values are there in the data range? (Ex. 10)*will open. - We will insert cell
**C5**in the input box as have the*Sales Volumes*for 6 months.

- The last prompt will pop up will ask you
*Which cell will show the result? (Ex. D12)*. We will insert cell**D12**in the input box.

- The percentage change in
*Sales Volume*between the consecutive months will be displayed. - It will output the average percentage change in
*Sales Volume*for all the sales volumes of the 6 months in cell**D12**.

**Read More: **How to Calculate Year over Year Percentage Change in Excel

**Things to Remember**

- If you do not have a
**Developer**tab, you can make it visible in**File > Option > Customize Ribbon**. - To open the
**VBA**editor, press**ALT + F11**. - Press
**ALT + F8**to bring up the**Macro**window.

**Download Practice Workbook**

**Related Articles**

- Percentage Difference Between Two Percentages in Excel

- How to Show Percentage Change in Excel Graph
- How to Calculate Percentage Change with Negative Numbers in Excel

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