What is a Percentage Change Calculator?
A percentage change calculator compares an old value and a new value to find the relative increase or decrease.
Change
Percentage Change Calculator
Calculate percentage change, increase, or decrease between two values instantly.
Percentage Calculator
Choose a calculation type and enter your values.
Change
Enter the required values to calculate instantly.
Ready to calculate
Enter your values and click calculate to see the result with a clean breakdown.
Percentage Change Formula
Percentage Change
((New − Old) ÷ Old) × 100
Examples
100 to 120
Input: Old = 100, New = 120
Result: 20% increase
100 to 80
Input: Old = 100, New = 80
Result: 20% decrease
Frequently Asked Questions
Subtract the old value from the new value, divide by the old value, and multiply by 100.
Subtract the new value from the old value, divide by the old value, and multiply by 100.
A negative result means the value decreased.
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