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Original Value

New Value

Calculated Percent Decrease

Percent Decrease


If you're instead looking to calculate percentage increase, use our percent increase calculator.

How to Find Percentage Decrease

To calculate percentage decrease:

  1. Subtract the new value from the original value.
  2. Divide the difference found in step one by the absolute value of the original value.
  3. Multiply the result of step two by 100 to find the percentage decrease.

Percent Decrease Formula

The formula for calculating percent decrease is:

Percent Decrease = ( Original Value - New Value ) / | Original Value| * 100