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Percentage Change Calculator
Calculate percent increase or decrease between two values.
How to Use the Percentage Change Calculator
- Enter the original (old) value.
- Enter the new value.
- Click Calculate to see percent increase or decrease.
Formula & Method
Percentage Change = ((V₂ - V₁) / |V₁|) × 100
If the result is positive, it is a percentage increase. If negative, it is a percentage decrease.
Examples
| Old | New | Change |
|---|---|---|
| 50 | 75 | 50% increase |
| 100 | 80 | 20% decrease |
Frequently Asked Questions
What is percentage change?
It shows the relative difference between two values as a percentage.
Can I calculate percentage decrease?
Yes, enter a new value smaller than the original.
What if the original value is zero?
Percentage change from zero is undefined; the calculator will show an error.
People Also Ask
How accurate is this calculator?
Our calculators use standard mathematical formulas and provide accurate results.
Can I use this on my phone?
Yes, all tools are fully responsive and work on any device.