# Reverse Percentages Calculator

Welcome to the our Reverse Percentages Calculator.

Here you will our reverse percentage calculator which will help you to find the original number before a percentage increase or decrease.

Our calculators will not only find the original numbers, but also show you all the working out along the way!

## Reverse Percentages Calculator 1

### Reverse Percentage Calculator 1 - How It Works

This calculator will help you to find the original number, when you have been given the final number and the percentage of the original number that made it.

E.g. if you know that 70% of a number is 210 then it will find the original number. (Answer: 300)

Simply enter the final number in the first box and the percentage in the 2nd box.

Click on the 'Find Original Number' box to work out what the original number was!

## Reverse Percentages Calculator 2

### Reverse Percentage Calculator 2 - How It Works

This calculator will help you to find the original number, when you have been given the final number and the percentage increase or decrease.

Example: if a toy in a sale marked 20% off costs \$210, what is the original price. (Answer: \$262.50)

Simply enter the final number in the first box and the percentage in the 2nd box and whether it was increased or decreased.

Click on the 'Find Original Number' box to work out what the original number was!

### How to find Reverse Percentages

Read on below if you want to find out how to find out reverse percentages work.

Reverse percentages are used when the percentage and the final number is given, and the original number needs to be found.

Step 1) Get the percentage of the original number.

If the percentage is an increase then add it to 100, if it is a decrease then subtract it from 100.

Step 2) Divide the percentage by 100 to convert it to a decimal.

Step 3) Divide the final number by the decimal to get back to the original number.

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