Percent of Change Practice

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 a percent increase?

Back

To calculate a percent increase, subtract the original value from the new value, divide by the original value, and multiply by 100%.

Front

How do you calculate a percent decrease?

Back

To calculate a percent decrease, subtract the new value from the original value, divide by the original value, and multiply by 100%.

Front

If a shirt costs $20 and is now $25, what is the percent increase?

Back

25% increase.

Front

If a book was $15 and is now $10, what is the percent decrease?

Back

33.33% decrease.

Front

What is the formula for percent of change?

Back

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

Front

What does a positive percent change indicate?

Back

A positive percent change indicates an increase in value.

Front

What does a negative percent change indicate?

Back

A negative percent change indicates a decrease in value.

Front

If the population of a town increased from 1,000 to 1,200, what is the percent of change?

Back

20% increase.

Front

If the price of a video game dropped from $60 to $45, what is the percent decrease?

Back

25% decrease.