Mr. Pass - Percent of Change (Increase and Decrease)

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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.

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How do you calculate Percent Increase?

Back

To calculate Percent Increase, use the formula: ((New Value - Original Value) / Original Value) x 100.

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How do you calculate Percent Decrease?

Back

To calculate Percent Decrease, use the formula: ((Original Value - New Value) / Original Value) x 100.

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What is the Percent Increase when a quantity goes from 75 to 215?

Back

Percent Increase = ((215 - 75) / 75) x 100 = 186.67% (rounded to 187%).

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What is the Percent Decrease when a quantity goes from 285 to 114?

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Percent Decrease = ((285 - 114) / 285) x 100 = 60%.

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If a school grows from 24 teachers to 30 teachers, what is the Percent Increase?

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Percent Increase = ((30 - 24) / 24) x 100 = 25%.

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If you finish a video game part in 32 minutes and then in 28 minutes, what is the Percent Decrease in time?

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Percent Decrease = ((32 - 28) / 32) x 100 = 12.5%.

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What is the Percent Change when a cheeseburger price increases from $0.79 to $1.00?

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Percent Increase = (($1.00 - $0.79) / $0.79) x 100 = 26.58%.

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What does a Percent Increase indicate?

Back

A Percent Increase indicates that the new value is greater than the original value.

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What does a Percent Decrease indicate?

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A Percent Decrease indicates that the new value is less than the original value.