Percentage Increase and Decrease

Front

What is percentage increase?

Back

Percentage increase is the amount of increase expressed as a percentage of the original amount. It is calculated using the formula: ((New Value - Original Value) / Original Value) x 100.

Front

What is percentage decrease?

Back

Percentage decrease is the amount of decrease expressed as a percentage of the original amount. It is calculated using the formula: ((Original Value - New Value) / Original Value) x 100.

Front

How do you calculate a 30% decrease on a number?

Back

To calculate a 30% decrease on a number, multiply the number by 0.30 and then subtract that value from the original number.

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 sale price after a discount?

Back

To calculate the sale price after a discount, subtract the discount amount from the original price. The discount amount is found by multiplying the original price by the discount percentage.

Front

What is sales tax?

Back

Sales tax is a percentage added to the price of goods and services, collected by the seller and paid to the government.

Front

How do you calculate the total cost including sales tax?

Back

To calculate the total cost including sales tax, multiply the original price by the sales tax rate (as a decimal) and then add that amount to the original price.

Front

What is the formula for calculating percent change?

Back

The formula for calculating percent change is: ((New Value - Old Value) / Old Value) x 100.

Front

If an item costs $85 and is on sale for $68, what is the percent decrease?

Back

Percent decrease = ((85 - 68) / 85) x 100 = 20%.

Front

What is the price of an item after a 15% discount on a $19.99 item?

Back

Price after discount = 19.99 - (19.99 x 0.15) = $16.99.