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 increase?

Back

To calculate percent increase, use 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

If a room's size increased from 2500 sq ft to 3000 sq ft, what is the percent increase?

Back

20%.

Front

If a cafe's hourly rate increased from $5 to $7, what is the percent increase?

Back

40%.

Front

If a town's population increased from 82,000 to 87,000, what is the percent increase?

Back

6%.

Front

If a school's enrollment decreased from 560 to 512 students, what is the percent decrease?

Back

9%.

Front

If gas prices decreased from $3.89 to $2.99, what is the percent decrease?

Back

23%.

Front

What is the formula for finding the new value after a percent increase?

Back

New value = original value + (original value x percent increase).

Front

What is the formula for finding the new value after a percent decrease?

Back

New value = original value - (original value x percent decrease).