Percentage Increase Calculator
Measure how much a value grew from an original amount to a new amount, as a percentage.
Percentage Increase Calculator
Measure how much a value grew from an original amount to a new amount, as a percentage.
How to use the Percentage Increase Calculator
- Enter the original (starting) value.
- Enter the new (final) value.
- Click Calculate.
Formula
% increase = ((New − Old) / |Old|) × 100
Example
From 80 to 120: ((120−80) / 80) × 100 = 50%
Step-by-step calculation
- Find the difference: 120 − 80 = 40.
- Divide by the original: 40 ÷ 80 = 0.5.
- Convert to percentage: 0.5 × 100 = 50%.
Real-world uses
- Tracking salary raises.
- Measuring price increases.
- Monitoring growth metrics.
Common mistakes
- Using the new value as the base instead of the original.
- Confusing percentage increase with percentage point increase.
- Dividing by the wrong value.
Frequently asked questions
What if the result is negative?
A negative result means the value actually decreased. Use the Percentage Decrease Calculator instead.
What if the original value is zero?
Percentage increase from zero is mathematically undefined.
How is this different from the percentage calculator?
This tool is specifically for measuring change between two values. The general percentage calculator handles "X% of Y" type problems.