How is percentage decrease different from percentage change?

Decrease specifically measures reduction from a starting value; change can be positive or negative.

Percentage Decrease Calculator

Find percent decrease from original to new value. Free percentage decrease calculator with steps.

Original value

New value

Formula used

% Decrease = ((Original − New) ÷ Original) × 100

Examples

Try a sample calculation

100 to 80

20% decrease

Clear step-by-step formula.

Works for prices and metrics.

Enter the required fields—dates, amounts, percentages, or measurements as labeled.
Double-check units (currency, tax rate, height/weight) match your scenario.
Run the calculation and read the breakdown, not just the headline number.
Adjust inputs to compare scenarios, or open a related Rankify calculator for the next step.

Solve percent increase, decrease, and part-of-whole problems.

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