Percent Increase & Decrease

Front

What is percent increase?

Back

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

Front

What is percent decrease?

Back

Percent 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 percent change?

Back

Percent change = (New Value - Old Value) / Old Value × 100%.

Front

If Susie’s hourly wage increased from $8.75 to $9.50, what is the percent increase?

Back

9% Increase.

Front

If Lacey's purse price decreased from $25 to $15, what is the percent decrease?

Back

40% Decrease.

Front

What is the formula to find the sale price after a discount?

Back

Sale Price = Original Price - (Original Price × Discount Rate).

Front

If a shirt costs $24.50 and has a 15% discount, what is the sale price?

Back

$20.83.

Front

How do you calculate sales tax?

Back

Sales Tax = Price × Tax Rate.

Front

If a TV costs $899 and the tax rate is 6.5%, how much tax do you pay?

Back

$58.43.

Front

What is the formula to calculate a tip?

Back

Tip Amount = Bill Amount × Tip Percentage.