Name: How Do You Find a Final Amount When the Initial Amount Is Decreased by the Same Percentage Multiple Times?
Uploaded: 2023-03-01T08:13:10.573Z
Channel: House of Math
Description: Watch this video to learn how you find a final amount when the initial amount is decreased by the same percentage multiple times.

Watch this video to learn how you find a final amount when the initial amount is decreased by the same percentage multiple times.

Decreasing by the Same Percentage Multiple Times

Decay factor formulas really show their power when an exponent is added, representing periods of time. This video shows you how to calculate more easily. 

A decay factor helps you calculate a final amount after a percentage has been subtracted. It is given by the formula:

 is the decimal representation of the percentage that is being subtracted.

Indicates the percentage decrease between the initial and final amounts. Also known as decay rate.

The starting amount, before a percentage increase or decrease

The amount after you have included the percentage increase or decrease. It is given by the formula:

The part of a power showing how many times the base is multiplied by itself

A measure of time. For example: years, months, hours, minutes or seconds.