Percent of Change

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

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 price increases from $50 to $60, what is the percent increase?

Back

Percent Increase = (60 - 50) / 50 x 100% = 20%.

Front

If a price decreases from $80 to $60, what is the percent decrease?

Back

Percent Decrease = (80 - 60) / 80 x 100% = 25%.

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).

Front

If a student scores 70 on a test and then scores 85 on the next test, what is the percent increase in their score?

Back

Percent Increase = (85 - 70) / 70 x 100% = 21.43%.

Front

If a population decreases from 200 to 150, what is the percent decrease?

Back

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

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.