Percentage Change Calculator
See how much a number increased or decreased from one value to another.
Percentage Change Calculator
Example: from 100 to 120
When to use percentage change
Percentage change compares a new value with an original value. It answers questions like “How much did this change?” or “Is the new number higher or lower than before?” The result can be positive, negative or zero.
For example, if website visits move from 1,000 to 1,250, the change is +25%. If a price goes from 80 to 60, the change is -25%. This makes percentage change useful for sales, traffic, prices, costs, grades, revenue, weight, time and any situation where one number replaces another.
Use this calculator when the order matters: the first number is the starting point and the second number is the new value.
Formula
(New number − Original number) ÷ Original number × 100
FAQ
Can percentage change be negative?
Yes. A negative percentage change means the new number is lower than the original number.
What does +20% mean?
It means the new number is 20% higher than the original number.
Is percentage change the same as percentage difference?
No. Percentage change uses a starting value. Percentage difference compares two numbers against their average.