Percentage Change
Free Percentage Change calculator with clear step-by-step results.
About Percentage Change
Percentage change measures relative movement between two values.
Formula
Formula
Change = (new − old) ÷ |old| × 100
Worked example
With the default values below, Percentage Change returns Change of 30.00%. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Old value
- 100
- New value
- 130
Results
- Change
- 30.00%
- Absolute Change
- 30.00
- Direction
- Increase
Step by step
- 1Values used
- 2Formula
- 3Change= 30.00
- 4Absolute Change= 30.00
- 5Direction= Increase
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How does this calculator work?
Percentage change measures relative movement between two values.
Why does this matter?
Use |old| so negative bases still give a meaningful sign.