What is Percentage Change?
Percentage change is a mathematical concept used to describe the degree of change over time, typically from an old value to a new one.
It can be a percentage increase if the number went up, or a percentage decrease if it went down.
How to calculate percentage change:
- Subtract the old value from the new value
- Divide the result by the old value
- Multiply by 100 to get the percentage
For example, if something goes from 100 to 120, the percentage change is 20%. If it drops to 80, the percentage change is -20% (a decrease).
Keywords: percentage change, percent increase, percent decrease, percentage calculator, percentage difference, change in percent
Last updated: May 2025