Percentage Increase Calculator
Work out the percentage rise between two values.
Percentage increase
30.0000%
From 50 to 65
Difference
15
Multiplier
1.3000×
New value as % of old
130.00%
((65 − 50) ÷ |50|) × 100 = 30.0000%
What does Percentage Increase Calculator do?
Enter a starting value and an ending value to get the percentage increase, the absolute difference and a multiplier. Useful for salary rises, price changes, growth rates and year-on-year comparisons.
How to Use Percentage Increase Calculator
- 1Enter the original valueThe starting number, before the change.
- 2Enter the new valueThe number after the change.
- 3Read the increaseYou get the percentage, the difference and how many times larger the new value is.
Key Features
- Percentage rise, absolute difference and multiplier shown together
- A second mode that increases a value by a percentage you choose
- Handles decreases gracefully by reporting a negative increase
- Worked examples for salary rises, rent changes and price rises
Frequently Asked Questions
How do I calculate a percentage increase?
Subtract the old value from the new one, divide by the old value, then multiply by 100. From 50 to 65: (65 − 50) ÷ 50 × 100 = 30%.
What if the new value is smaller?
The result is negative, which means it is a decrease. Use the percentage decrease calculator if you want the answer stated as a positive drop.
Why can I not just add the percentages together?
Because each change applies to a different base. A 10% rise followed by another 10% rise is a 21% rise overall, not 20%, since the second rise is calculated on the already-increased amount.
How do I increase a number by a percentage?
Multiply by (1 + percent ÷ 100). To add 18% to 450: 450 × 1.18 = 531. The second mode on this page does exactly that.
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