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Percent Increase, Decrease, Difference, and Error Calculator

Compare two values using a selected percent method.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

Change and error divide by the first value; percent difference divides the absolute difference by the average magnitude.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

From 80 to 100 is a 25% increase.

Limitations

This calculator is for educational use; verify important work independently.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.