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 value, calculated as (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

How do you calculate Percent Increase?

Back

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

Front

If a product's price decreases from $50 to $30, what is the percent decrease?

Back

Percent Decrease = (50 - 30) / 50 x 100% = 40%.

Front

If a student's score increases from 70 to 85, what is the percent increase?

Back

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

Front

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

Back

New Value = Original Value + (Percent Change x Original Value).

Front

What does a 100% increase mean?

Back

A 100% increase means the new value is double the original value.

Front

What does a 50% decrease mean?

Back

A 50% decrease means the new value is half of the original value.

Front

If the original price of a shirt is $40 and it is on sale for $30, what is the percent decrease?

Back

Percent Decrease = (40 - 30) / 40 x 100% = 25%.

Front

If a population increases from 200 to 300, what is the percent increase?

Back

Percent Increase = (300 - 200) / 200 x 100% = 50%.