The percentage calculator is a free and easy to use app that will make your calculations much simpler. There are 4 different percentage calculations you can perform, and those are: value, change, increase, decrease, conversion and growth, with hopefully more to come in the future. Value calculates how much x% of y is, for example, 25% of 40 is 10. Change calculates how much y changes if x% is added/subtracted from it, for example 50 + 20% = 60 With the conversion, you can convert fractions into