Percentage change calculator
A move from 80 to 100 is a change of 25.00%. Enter the old and new values to see the percent change, the difference and the move needed to return to the old value.
Results update as you type. Nothing you enter is stored.
How it works
Percent change compares the difference with where you started. It is the standard way to report price moves, salary hikes and growth rates. The calculator also shows the reverse move, because a fall and the recovery from it are not the same percentage.
Formula
Change % = (new - old) / old x 100
- Our live pages, such as the gold rate and Nifty pages, use exactly this formula for their change figures.
Frequently asked questions
How do I calculate percentage increase?
Subtract the old value from the new value, divide by the old value and multiply by 100.
Why does a 50% fall need a 100% rise to recover?
After a 50% fall, 100 becomes 50; getting back to 100 means adding 50, which is 100% of the new, lower value.
Can the percentage change be negative?
Yes. A negative result means the value fell.
Related
This tool is for information only and is not investment, tax or legal advice. Results depend on the inputs and assumptions you enter; check important figures with the official source or a qualified professional.