Accumulated Interest

This is equation can be useful when calculating the total value of a loan, credit card, or mortgage.

 , where:

F = Final Value of loan or mortgage.

I = Initial Value of loan or mortgage.

i = Periodic Interest Rate (As a decimal, where 5% = .05)

n = Numer of periods without payment.

Percentage Increase

To calculate a percentage increase:

, where:

% = Percentage Change

Change = How much the original value has changed by.

Percentage of a Whole

, where:

% = Percent of Whole

Total = Entire set