A percentage gain or loss on an investment is extremely useful to investors who monitor performance. Calculating it is quite easy. Here's what you need to know.

Here's an example for a generic home-improvement project. First, calculate the percentage over budget for the total budget to get an understanding of the overall project.

Calculating the return of a Treasury bill In order to calculate the return of a Treasury bill, we need to compare its par value to its face value.

How to Calculate the Percentage of Tax Withheld. Multiple factors affect the calculation of withholding by the percentage method, including an employee's marital status and the number of ...