Calculators
Percentage change calculator
Measure the percentage increase or decrease between two values.
Processed locally
Help and method
Subtract the old value from the new, then divide by the absolute old value and multiply by 100. The old value cannot be zero; a negative result means a decrease under this convention.
Methods and reliabilityWorked example
An example you can try or adapt to your own values.
- Original value
- 80
- New value
- 100
Result
Percentage change: 25%