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

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 quantity increases from 20 to 30, what is the percent increase?

Back

The percent increase is 50%.

Front

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

Back

The percent decrease is 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 shirt costs $40 and is marked up by 25%, what is the new price?

Back

The new price is $50.

Front

If a car's value decreases from $20,000 to $15,000, what is the percent decrease?

Back

The percent decrease is 25%.

Front

What does a 100% increase mean?

Back

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