Percent Increase/Decrease (5.1)

Front

What is Percent Increase?

Back

Percent Increase is the amount of increase expressed as a percentage of the original amount. It is calculated using the formula: ((New Value - Original Value) / Original Value) x 100.

Front

What is Percent Decrease?

Back

Percent Decrease is the amount of decrease expressed as a percentage of the original amount. It is calculated using the formula: ((Original Value - New Value) / Original Value) x 100.

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How do you calculate the new amount after a percent increase?

Back

To calculate the new amount after a percent increase, use the formula: New Amount = Original Amount + (Original Amount x Percent Increase).

Front

How do you calculate the new amount after a percent decrease?

Back

To calculate the new amount after a percent decrease, use the formula: New Amount = Original Amount - (Original Amount x Percent Decrease).

Front

Find the Percent Increase from 24 to 30.

Back

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

Front

Find the Percent Change from 95 trees to 145 trees.

Back

Percent Change = ((145 - 95) / 95) x 100 = 52.63% (rounded to 53%).

Front

If a school's population increases from 380 to 399, what is the percent increase?

Back

Percent Increase = ((399 - 380) / 380) x 100 = 5%.

Front

What is the formula for calculating percent change?

Back

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

Front

If attendance at a festival increased from 2376 to 2950, what is the percent increase?

Back

Percent Increase = ((2950 - 2376) / 2376) x 100 = 24%.

Front

What is a 300% increase on $25?

Back

New Amount = $25 + ($25 x 3) = $100.