How to Calculate Reverse Percentage
What is Reverse Percentage?
Works backwards from a final amount to find the original amount before percentage increase or decrease.
Formula
Original = Final Amount / (1 + Percentage Change/100)
Step-by-Step Guide
- 1Enter the final amount after percentage change
- 2Input the percentage increase or decrease
- 3Calculate original amount
Worked Examples
Input
Final $120 after 20% increase
Result
Original = $100
Reverse discount or markup calculation
Common Mistakes to Avoid
- ✕Using percentage as decimal incorrectly
- ✕Not adjusting formula direction for increases vs decreases
Ready to calculate? Try the free Reverse Percentage Calculator
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