Percentage Change Calculator
Find the percentage change between any two values. The result is signed: positive for increases, negative for decreases. Includes step-by-step formula breakdown.
▲ Increase
+25.00%
Absolute change
+25.00
Calculation
Step 1: 125.00 − 100.00 = +25.00
Step 2: +25.00 ÷ |100.00| = 0.2500
Step 3: × 100 = +25.00%
Formula & Quick Examples
Formula
% Change = ((New Value − Old Value) ÷ |Old Value|) × 100
Use |Old Value| (absolute value) to handle negative starting values correctly.
| Scenario | From | To | % Change |
|---|---|---|---|
| Stock price | $50 | $75 | +50.00% |
| Monthly sales | 1,200 | 900 | −25.00% |
| Test score | 72 | 88 | +22.22% |
| Website bounce | 75% | 55% | −26.67% |
| Revenue YoY | $80K | $120K | +50.00% |
Frequently Asked Questions
What is percentage change? ▼
Percentage change measures how much a value changed relative to its original value. Formula: ((New − Old) ÷ |Old|) × 100. Positive = increase, negative = decrease.
What is the percentage change from 80 to 100? ▼
((100 − 80) ÷ 80) × 100 = 25% increase.
What is the difference between percentage change and percentage difference? ▼
Percentage change has direction (from old to new) and divides by the original value. Percentage difference has no direction and divides by the average of both values.
How do I calculate a percentage change increase from 50 to 75? ▼
((75 − 50) ÷ 50) × 100 = 50% increase.
Can percentage change be more than 100%? ▼
Yes. If a value doubles, the percentage change is 100%. If it triples, it's 200%. There is no upper limit for increases.