How this calculator works
Measure percentage increase or decrease between original and new values.
Formula
percentage change = ((new - original) / original) * 100
Step-by-step
- Enter original value.
- Enter new value.
- Calculate to get percentage and absolute change.
Example
- Original = 80
- New = 100
Percentage change = 25%
FAQs
What does a negative result mean?
It means the value decreased compared to the original.
Why can't original value be zero?
Division by zero is undefined, so percentage change cannot be computed from zero baseline.