How do you calculate percentage increase and decrease in Excel?
John Thompson
Updated on January 11, 2026
For example, if September's bill amount is in cell B4 and October's bill amount is in cell B5, your alternative Excel formula would be =SUM(B5-B4)/B4. The percentage increase between September and October is 25%, with this figure shown as a decimal number (0.25) by default in Excel using the formula above.
How do you calculate percentage increase and decrease in Excel formula?
percentage increase = Increase ÷ Original Number × 100. If the number you get is negative, like -0.10, then the percentage actually decreased rather than increased.How do I calculate percentage up or down in Excel?
Enter the formula =C2/B2 in cell D2, and copy it down to as many rows as you need. Click the Percent Style button (Home tab > Number group) to display the resulting decimal fractions as percentages. Remember to increase the number of decimal places if needed, as explained in Percentage tips. Done! : )How do I calculate percentage increase and decrease?
First: work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100. If your answer is a negative number, then this is a percentage decrease.How do you calculate percentage change or difference between two numbers in Excel?
Find the percentage of change between two numbers
- Click any blank cell.
- Type =(2500-2342)/2342, and then press RETURN . The result is 0.06746.
- Select the cell that contains the result from step 2.
- On the Home tab, click . The result is 6.75%, which is the percentage of increase in earnings.
How to Calculate Percent Increase and Decrease in Excel
How do I calculate the percentage difference between two numbers?
Percentage Difference Formula:Percentage difference equals the absolute value of the change in value, divided by the average of the 2 numbers, all multiplied by 100. We then append the percent sign, %, to designate the % difference.
How do I calculate the percentage increase between two numbers?
% Increase = Increase / Original Number × 100. This gives you the total percentage change, or increase. To calculate a percentage decrease first, work out the difference (decrease) between the two numbers you are comparing. Next, divide the decrease by the original number and multiply the answer by 100.How do you calculate percentage decrease in change?
How to calculate percentage decrease
- Determine the starting value and ending value. ...
- Subtract the ending value from the starting value. ...
- Divide this number by the starting value. ...
- Multiply by 100 to find the percentage change (Note: if the percentage is a negative, this means the percentage change is positive.)