I was recently looking for a simple percentage calculator for iPhone and I came across OffOf, an app developed by Daeo Corp. and available for free on the App Store. As the name suggests, OffOf lets ...

and so on. Just by knowing the easy percentages, you can add and find almost any percentage. Now, ditch the calculator, and go split numbers in confidence. Get daily tips, tricks, and tech guides ...

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 ...