Percentage Increase and Decrease

Front

What is a percentage increase?

Back

A percentage increase is a way to express how much a quantity has grown in relation to its original amount, calculated as (new amount - original amount) / original amount x 100%.

Front

What is a percentage decrease?

Back

A percentage decrease is a way to express how much a quantity has reduced in relation to its original amount, calculated as (original amount - new amount) / original amount x 100%.

Front

How do you calculate the selling price after a markup?

Back

Selling Price = Cost Price + (Markup Percentage x Cost Price). For example, if a soda costs $1.25 with a 20% markup, Selling Price = $1.25 + (0.20 x $1.25) = $1.50.

Front

How do you calculate the new amount after a percentage increase?

Back

New Amount = Original Amount + (Percentage Increase x Original Amount). For example, to increase $90 by 12%, New Amount = $90 + (0.12 x $90) = $100.80.

Front

How do you calculate the new amount after a percentage decrease?

Back

New Amount = Original Amount - (Percentage Decrease x Original Amount). For example, to decrease 340 pages by 20%, New Amount = 340 - (0.20 x 340) = 272 pages.

Front

What is the formula for calculating percent change?

Back

Percent Change = (New Value - Old Value) / Old Value x 100%.

Front

If an item is originally priced at $65.50 and is sold for $52.40, how do you find the percent decrease?

Back

Percent Decrease = (Original Price - Sale Price) / Original Price x 100%. For this example, Percent Decrease = ($65.50 - $52.40) / $65.50 x 100% = 20%.

Front

What is a markup?

Back

A markup is the amount added to the cost price of goods to cover overhead and profit, usually expressed as a percentage of the cost price.

Front

What is a discount?

Back

A discount is a reduction in the price of a product or service, often expressed as a percentage of the original price.

Front

How do you calculate the total cost after applying a discount?

Back

Total Cost = Original Price - (Discount Percentage x Original Price). For example, if a chair costs $19.99 with a 15% discount, Total Cost = $19.99 - (0.15 x $19.99) = $16.99.