Reverse Percentage Calculator

Percentage Change Type

Enter the Final Value

Percentage Change (%)

What is a Reverse Percentage Calculator?

A Reverse Percentage Calculator helps you find the original value before a percentage increase or decrease was applied.

For instance, you know the final price after a 20% discount and want to find the price before the discount. This tool simplifies the process.

Reversing percentage increases or decreases.

Finding the original value before a percentage change.

Calculating percentages backward for financial or shopping needs.

Businesses determining pre-tax prices.

Financial professionals working with percentage-based transactions.

Enter the final value after the percentage change.

Enter the percentage change.

Select whether the change is an increase or decrease.

The calculator will display the original value instantly.

To calculate percentages backward, use these formulas:

For a Percentage Increase:

Original Value = Final Value ÷ (1 + (Percentage Increase ÷ 100))

For a Percentage Decrease:

Original Value = Final Value ÷ (1 - (Percentage Decrease ÷ 100))

Final Price: $120

Percentage Increase: 20%

Original Price = $120 ÷ (1 + (20 ÷ 100)) = $100

Final Price: $80

Percentage Decrease: 20%

Original Price = $80 ÷ (1 - (20 ÷ 100)) = $100

Use this tool for quick, accurate calculations.

Use the formula: Original Value = Final Value ÷ (1 - (Percentage Decrease / 100)). Our calculator automates this process for you.

Input the final value and the percentage change. Our tool will compute the original value instantly.