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Percent Decrease Calculator

Find the percent decrease between two values, or the value after a decrease.

Change the values and press Calculate to work out your own figures.

Percent decrease

Enter the initial and final values.

About initial valueThe starting value.
About final valueThe value after the change.
Result
Percent decrease
60%
Change
-180

From 300 to 120 is a 60% decrease.

Show the working
  1. Percent decrease = (initial − final) ÷ initial × 100

Value after a decrease

Enter the initial value and the percent decrease.

About initial valueThe starting value.
About percentFor example 25 or 25%.
Result
Value after the decrease
60
Amount of change
20

80 decreased by 25% is 60.

Show the working
  1. 80 × (1 − 0.25) = 60

How to use it

Enter the initial and final values. Enter the initial value and the percent decrease.

Numbers can be whole numbers, decimals (0.75), fractions (3/4), mixed numbers (1 1/2), repeating decimals (0.(3)) and, where a percent is asked for, percentages (75%). Show the working gives each step.

Key facts

decrease = (initial − final) ÷ initial × 100

Sale prices

A price reduced by 15% costs 85% of the original: 49.99 × 0.85 = 42.4915.

Questions

What is the percent decrease from 300 to 120?

60%.

What is 80 decreased by 25%?

60.

Formulas

decrease = (initial − final) ÷ initial × 100

Sources

Limitations

  • Numbers have at most 120 digits.

Formula version 0.1.0Reviewed