Percent Change Calculator
Find the percent increase or decrease from one value to another.
Change the values and press Calculate to work out your own figures.
Enter the original and new values.
Show the working
- Percent change = (new − old) ÷ |old| × 100
How to use it
Enter the original and new values.
Numbers can be whole numbers, decimals (0.75), fractions (3/4), mixed numbers (1 1/2), repeating decimals (0.(3)) and, where a percent is asked for, percentages (75%). Show the working gives each step.
Key facts
change = (new − old) ÷ |old| × 100
Dividing by the original
Percent change is always relative to the starting value, so 80 → 60 is −25% but 60 → 80 is +33.(3)%.
Questions
What is the percent change from 15 to 60?
A 300% increase.
From 80 to 60?
A 25% decrease.
Formulas
change = (new − old) ÷ |old| × 100
Sources
Limitations
- Numbers have at most 120 digits.