Percent Increase, Decrease, Error

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has grown relative to its original amount, expressed as a percentage.

Front

What is percent decrease?

Back

Percent decrease is a measure of how much a quantity has shrunk relative to its original amount, expressed as a percentage.

Front

How do you calculate percent increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) * 100.

Front

How do you calculate percent decrease?

Back

Percent Decrease = ((Original Value - New Value) / Original Value) * 100.

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the actual value.

Front

How do you calculate percent error?

Back

Percent Error = (|Measured Value - Actual Value| / Actual Value) * 100.

Front

Example of percent increase: 40 to 28 peaches. What is the percent change?

Back

Percent Decrease = ((40 - 28) / 40) * 100 = 30%.

Front

Example of percent error: Measured length 12 cm, actual length 14.25 cm. What is the percent error?

Back

Percent Error = (|12 - 14.25| / 14.25) * 100 = 15.79%.

Front

Example of percent increase: 6 liters to 8 liters. What is the percent change?

Back

Percent Increase = ((8 - 6) / 6) * 100 = 33.3%.

Front

Example of percent error: Estimated deer population 17,600, actual count 21,300. What is the percent error?

Back

Percent Error = (|17600 - 21300| / 21300) * 100 = 17.4%.