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 the percent increase?

Back

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

Front

How do you calculate the percent decrease?

Back

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

Front

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

Back

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

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 x (1 + Percent Increase).

Front

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

Back

New Value = Original Value x (1 - 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 car's value drops from $20,000 to $15,000, what is the percent decrease in value?

Back

Percent Decrease = (20,000 - 15,000) / 20,000 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.