Percent - Percent Change Review

Front

What is percent change?

Back

Percent change is a way to express a change in a quantity as a percentage of the original amount. It is calculated using the formula: ((New Value - Original Value) / Original Value) x 100.

Front

How do you calculate percent decrease?

Back

To calculate percent decrease, use the formula: ((Original Value - New Value) / Original Value) x 100.

Front

How do you calculate percent increase?

Back

To calculate percent increase, use the formula: ((New Value - Original Value) / Original Value) x 100.

Front

What is the percent decrease if a jacket's price drops from $50 to $40?

Back

20% decrease.

Front

What is the percent increase if a smartphone's price rises from $400 to $460?

Back

15% increase.

Front

If a water tank's water level drops from 120 gallons to 90 gallons, what is the percent decrease?

Back

25% decrease.

Front

If a group of people decreases from 75 to 25, what type of change is this?

Back

Decrease.

Front

What is the percent change if you finish a video game level in 32 minutes last week and 28 minutes this week?

Back

12.5% decrease.

Front

What does a positive percent change indicate?

Back

A positive percent change indicates an increase in value.

Front

What does a negative percent change indicate?

Back

A negative percent change indicates a decrease in value.