Percentage Change Calculator
Calculate percentage change between two numbers. The result shows whether the value increased or decreased.
Result will appear here.
All calculations run locally in your browser. No data is stored or transmitted.
How it works
Percent change formula: ((to − from) ÷ from) × 100
- If the result is positive → percentage increase
- If the result is negative → percentage decrease
- If the result is 0 → no change
Percent change measures relative difference compared to the starting value.
Examples
- From 100 → To 85 → −15% (decrease)
- From 50 → To 60 → +20% (increase)
- Revenue 10,000 → 12,500 → +25%
- Price 200 → 150 → −25%
FAQ
- What is percentage change? It measures how much a value increases or decreases relative to its original value.
- Why can’t “from value” be 0? The formula divides by the starting value, so 0 makes the calculation undefined.
- Is this the same as percent difference? Not exactly. Percent difference compares two values without choosing a starting point.
- Can the result be negative? Yes. A negative result indicates a decrease.
- Is this calculation accurate? Yes. It uses the standard mathematical formula.