Percentage Change Calculator
Jenzzy computes relative change from old to new values for prices, metrics, and growth.
Inputs
Results
Enter values to see results.
Formula
% Change = ((New − Old) / Old) × 100
Positive results are increases; negative are decreases.
Example
- Difference: 20
- Percent: (20/80)×100 = 25%= 25%
Result: 25% increase
Frequently Asked Questions
Old value zero?
Percent change undefined—use absolute difference.
Reverse?
Going 100→80 is −20%, not −25%.
vs percentage points?
Points are absolute; percent is relative.