Percent Increase and 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 increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) x 100.

Front

How do you calculate percent decrease?

Back

Percent Decrease = ((Original Value - New Value) / Original Value) x 100.

Front

If a shirt originally costs $40 and is on sale for 20% off, what is the sale price?

Back

$32.

Front

If a store had 100 items and sold 20% of them, how many items were sold?

Back

20 items.

Front

If a phone's battery life increased from 8 hours to 10 hours, what is the percent increase?

Back

25%.

Front

If a car's original price was $20,000 and it is now being sold for $16,000, what is the percent decrease?

Back

20%.

Front

If a population of a town increased from 5000 to 6000, what is the percent increase?

Back

20%.

Front

What does a 20% decrease mean in terms of original value?

Back

It means the new value is 80% of the original value.