it helps to find out what one percent is first. Watch the video to learn more about calculating percentages. Oo! That looked like it hurt. Oh well, that's one problem solved. Now for another.

Or just six months? Or 10 years? Is there a way to calculate the annual percentage change of this data for easy comparison with other annual data? You bet there is. Here's how. Before we dive into ...

Calculating the percentage gain or loss is straightforward and quite easy. You must determine what you gained or lost when you sold your investment so you first have to know how much the ...