Percentage Increase / Decrease Calculator
Enter the original value and the new value to see how much it changed in percent. A positive result is an increase and a negative result is a decrease.
Your details
Result
Increase
+50.00%
from 50 to 75
- Difference
- 25
- Formula: (new − original) ÷ original × 100. Going from 10% to 12% is +2 percentage points but a 20% relative increase.
Good to know: From 50 to 75 is a 50% increase.
About this tool
Calculate the percentage increase or decrease between two values — for price tracking, budgeting, and data analysis.
Formula
% change = ((new - old) ÷ old) × 100. Positive = increase, negative = decrease.
Reference values
- $50 → $75 = +50% increase
- $80 → $60 = -25% decrease
- Doubling = +100% change
Questions people ask
What is the percentage change formula?
(New − Original) ÷ Original × 100.
What if the original value is zero?
Percentage change is undefined, because you can't divide by zero.
Is percentage change the same as percentage points?
No. Going from 10% to 12% is a 2 percentage point rise, but a 20% relative increase.
Related tools
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it. How we check our calculators