Excel Office

Excel How Tos, Tutorials, Tips & Tricks, Shortcuts

How to calculate decrease by percentage in Excel

If you need to decrease a number by a certain percentage, you can use a simple formula that multiplies the number times the percent – 1.




In the example, the active cell contains this formula:


In this case, Excel first calculates the result of 1 – the value in D6 (.2) to get 0.8 which it then multiplies times the value in C6 (70) to get a final result of 56:

Worked Example:   Subtotal function in Excel

=70 * (1 – .2)
=70 * (0.8)

Worked Example:   Understanding Named Range, Named Constant, Name Manager in Excel Formulas

Note that must subtract the percent from 1 if you want to decrease a number. If you don’t, you’ll simply get the amount of the number that the percentage represents.

Worked Example:   How to calculate percent change in Excel

Leave a Reply

Your email address will not be published. Required fields are marked *