Quick, clean, and to the point

Get percentage discount

Excel formula: Get percentage discount
Generic formula 

To calculate the percentage discount from an original price and a sale price, you can use a formula that divides the difference by the original price. In the example shown, the formula in E5, copied down, is:


The result is a decimal value with percentage number format applied.


In this example, the goal is to determine the percentage discount for each item shown in the table, given an original price and a sale price. In other words, given the Charcoal grill has an original price of $70.00 and a Sale Price of $59.50, we want to calculate a percentage discount of 15%, based on a price decrease of $10.50. Note that a discount of 15% represents the the price change ($10.50) expressed as a percentage of the original price. To solve for the percentage when the price change is known, we can use a general formula like this:

x =0.15

However, since the price change is not in the table as a separate column, we need to add a step:

x =0.15

Applying this approach to the worksheet as shown, the formula in cell E5, copied down, is:


For each item in the table, Excel returns a calculated percentage.

Formatting percentages in Excel

In mathematics, a percentage is a number expressed as a fraction of 100. For example, 75% is read as "Seventy-five percent" and is equivalent to 75/100 or 0.75. Accordingly, the values in column E are decimal values. To display these numbers as a percentage with the percent sign (%), the Percentage number format has been applied to E5:E15.

Dave Bruns

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