Percentage Increase and Decrease

Front

What is percentage increase?

Back

Percentage increase is a measure of how much a quantity has grown relative to its original amount, expressed as a percentage.

Front

What is percentage decrease?

Back

Percentage decrease is a measure of how much a quantity has shrunk relative to its original amount, expressed as a percentage.

Front

How do you calculate percentage increase?

Back

Percentage Increase = ((New Value - Old Value) / Old Value) x 100.

Front

How do you calculate percentage decrease?

Back

Percentage Decrease = ((Old Value - New Value) / Old Value) x 100.

Front

What is the formula to find the final amount after a percentage increase?

Back

Final Amount = Original Amount + (Original Amount x Percentage Increase).

Front

What is the formula to find the final amount after a percentage decrease?

Back

Final Amount = Original Amount - (Original Amount x Percentage Decrease).

Front

If a shirt costs $50 and is on sale for 20% off, what is the sale price?

Back

Sale Price = $50 - ($50 x 0.20) = $40.

Front

What is a tip?

Back

A tip is a sum of money given to someone for their service, often calculated as a percentage of the total bill.

Front

If you leave a 15% tip on a $30 meal, how much is the tip?

Back

Tip = $30 x 0.15 = $4.50.

Front

What does it mean when sales tax is added to the price?

Back

It means that the total cost of an item will be higher than the listed price due to an additional percentage charged by the government.