Reverse Percentage
MATHEMATICS
Reverse Percentage
Recover an amount before a percentage increase or decrease.
UNDERSTAND YOUR RESULT
How it works
Recover an amount before a percentage increase or decrease.
THE CALCULATIONresult / (1 + percentage / 100)
Using this calculator
Enter resulting amount, percentage change. result / (1 + percentage / 100).
What to keep in mind
Calculations use finite real numbers. Intermediate values are unrounded; very large or undefined results are rejected.
Frequently asked questions
Are my entries saved?
No. Calculator inputs remain in the current page and are cleared when you reload or leave. The tools do not upload your entries.
Why are results rounded?
The display is rounded for readability. Calculations use unrounded intermediate values. An estimate should not be interpreted as an exact measurement.