Percent of Change Flashcard Review

Front

What is percent of change?

Back

Percent of change is a way to express how much a quantity has increased or decreased in relation to its original amount, calculated as (new value - original value) / original value x 100.

Front

How do you calculate percent decrease?

Back

Percent decrease is calculated using the formula: ((original value - new value) / original value) x 100.

Front

How do you calculate percent increase?

Back

Percent increase is calculated using the formula: ((new value - original value) / original value) x 100.

Front

If a quantity decreases from 100 to 75, what is the percent decrease?

Back

Percent decrease = ((100 - 75) / 100) x 100 = 25%.

Front

If a quantity increases from 50 to 75, what is the percent increase?

Back

Percent increase = ((75 - 50) / 50) x 100 = 50%.

Front

What is the formula for percent of change?

Back

The formula for percent of change is: (new value - original value) / original value x 100.

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change in the value.

Front

If the original price of an item is $100 and it is now $120, what is the percent increase?

Back

Percent increase = ((120 - 100) / 100) x 100 = 20%.

Front

If the original price of an item is $200 and it is now $150, what is the percent decrease?

Back

Percent decrease = ((200 - 150) / 200) x 100 = 25%.

Front

What is the percent change if a student scores 80 on a test and then scores 90 on the next test?

Back

Percent increase = ((90 - 80) / 80) x 100 = 12.5%.