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 of Change?

Back

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

Front

What does a positive Percent of Change indicate?

Back

A positive Percent of Change indicates an increase in value.

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What does a negative Percent of Change indicate?

Back

A negative Percent of Change indicates a decrease in value.

Front

If a price changes from $50 to $30, what is the Percent of Change?

Back

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

Front

If a population increases from 200 to 250, what is the Percent of Change?

Back

Percent of Change = (250 - 200) / 200 x 100% = 25% (Increase).

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What is the Percent of Change when attendance drops from 1000 to 800?

Back

Percent of Change = (800 - 1000) / 1000 x 100% = -20% (Decrease).

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How do you round Percent of Change to the nearest whole percent?

Back

To round Percent of Change to the nearest whole percent, look at the decimal. If it's 0.5 or higher, round up; if it's lower, round down.

Front

What is the Percent of Change if a product's price decreases from $40 to $30?

Back

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

Front

If a student scores 70 on a test and then scores 85 on the next test, what is the Percent of Change in their score?

Back

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