# Decrease by percentage

=number*(1-percent)

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:

=C6*(1-D6)

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:

=70 * (1 - .2)

=70 * (0.8)

=56

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.

## Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.

## Download 100+ Important Excel Functions

Get over 100 Excel Functions you should know in one handy PDF.