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Relative Change Calculator

Result

Calculated result 20 Based on the values entered.
↗ Math

Relative Change Calculator — free online calculator.

Formula

((New - Old) ÷ Old) × 100
  • Relative Change Calculator calculates its result from Old Value, New Value. It uses the formula ((New - Old) ÷ Old) × 100. Change any input to recalculate the result instantly.
  • The main inputs are Old Value, New Value. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Relative Change

Inputs
  • Old Value: 100
  • New Value: 120

Using Old Value = 100, New Value = 120, the calculated result is 20.

Sample result: Calculating…

Frequently asked questions

What does the Relative Change calculate?

Relative Change Calculator — free online calculator.

Which values should I enter?

Enter Old Value, New Value using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: ((New - Old) ÷ Old) × 100.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026