Reverse Percentage Calculator

Find the original value before percentage change

$
%

ORIGINAL AMOUNT

$0.00

Try These Examples

Increased 20% to $120
→ Original $100
Decreased 25% to $150
→ Original $200

How Reverse Percentage Works

For Increase: Original = Final Amount ÷ (1 + Percentage/100)

For Decrease: Original = Final Amount ÷ (1 - Percentage/100)

Frequently Asked Questions

What is a reverse percentage calculator? â–¼
A reverse percentage calculator helps you find the original value when you only know the final amount and the percentage change (increase or decrease).
Formula for percentage increase reverse? â–¼
Original Value = Final Amount / (1 + Percentage / 100)
Formula for percentage decrease reverse? â–¼
Original Value = Final Amount / (1 - Percentage / 100)
Can percentage decrease be more than 100%? â–¼
No. A decrease of more than 100% would result in a negative original value, which is mathematically invalid in most real-world scenarios.
Is this calculator accurate? â–¼
Yes. It uses precise mathematical formulas and real-time calculation with floating point precision.