# How do you calculate 80% discount?

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# Percentage Off Calculator

Sale price =

Original price =

Percent off = %

Percentage Off Calculator is a free online tool that displays the percentage off of the product. BYJU’S online percentage off calculator tool makes the calculation faster, and it displays the percentage off of the product in a fraction of seconds.

How to Use the Percentage Off Calculator?

The procedure to use the percentage off calculator is as follows:

**Step 1:** Enter the original price and the selling price in the respective input field

**Step 2:** Now click the button “Calculate Percentage Off” to get the result

**Step 3:** Finally, the percentage off for the product will be displayed in the output field

What is Meant by Percentage Off?

In mathematics, the percentage off of the product is defined as the price of the product which is reduced by some percentage from the original price of the product. The procedure to calculate the percentage off for the product is given as follows:

Subtract the sales price form the original price

Divide the discount price by the original price

Finally, multiply the solution by 100

For example, if the cost/original price of the product is Rs. 100 and the selling price is Rs. 80, then the percentage off is calculated as:

Step 1: 100 – 80 = 20

Step 2: 20/100= 0.2

Step 3: 0.2 x 100 = 20

Hence, the percentage off for the product is 20, i.e. 20%.