Reverse Percentage Calculator

What is a Reverse Percentage Calculator?

A Reverse Percentage Calculator is an online tool which helps you to find the original value of something before a percentage increase or decrease was applied.

For example, you know the final price of a product after the 20% of discount applied, but you want to know the price of a product before the discount that is the original price, our tool will do the math for you to find out the original price.

This calculator is perfect for anyone looking to:

To reverse calculate a percentage increase or decrease.

Find the original value before a percentage-based change applied.

Looking for Calculate percentages backwards easily for financial, shopping, or mathematical needs.

Businesses determining pre-tax prices.

Financial professionals working with percentage-based transactions.

How to Use the Reverse Percentage Calculator

Enter the Final Value means after a percentage change applied.

Enter the Percentage Change either be an increase or a decrease.

Select whether it's an increase or decrease in percentage

The calculator will instantly show the original value before the percentage change.

Formula for Reverse Percentage Calculation

To calculate percentages backwards, we use the following formulas:

For a Percentage Increase:

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

For a Percentage Decrease:

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

Examples of Reverse Percentage Calculations

Example for Reverse Percentage Increase:

Final Price: $120

Percentage Increase: 20%

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

Example for Reverse Percentage Decrease:

Final Price: $80

Percentage Decrease: 20%

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

By using our tool, you can quickly find the original value without complicated manual calculations.

FAQS

How can I find the original value after a percentage decrease?

Use the formula: Original Value = Final Value ÷ (1 - (Percentage Decrease / 100)), but our Reverse Percentage Calculator can do this automatically for you.

How do I calculate percentages backwards?

You need final value and the percentage change to reverse calculate the percentages, simply input these values out tool will calculate the original value easily.