Percent of Change

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What is Percent of Change?

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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 the percent of change?

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To calculate the percent of change, use the formula: Percent of Change = ((New Value - Original Value) / Original Value) x 100%.

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If a class size increases from 35 to 42 students, what is the percent of change?

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20% Increase.

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Mary lost 30 pounds from her original weight of 180 pounds. What is the percent of change?

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17% Decrease.

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What percent of 50 is 20?

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40%.

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Eddie started with 20 tickets and ended with 30 tickets. What is the percent of change?

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50% Increase.

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If the original cost of an item is $50 and the new cost is $60, what is the percent of change?

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20% Increase.

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What does a positive percent of change indicate?

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A positive percent of change indicates an increase in value.

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What does a negative percent of change indicate?

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A negative percent of change indicates a decrease in value.

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If a population decreases from 200 to 150, what is the percent of change?

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25% Decrease.