Part, whole, percent calculations involve finding the relationship between a part and its whole, or finding one value when the other two are known. The concepts of part and whole are often used in mathematical and real-world situations to express proportions and ratios.

The percent is a way of expressing a ratio as a fraction of 100. For example, if a part represents 40% of the whole, it means the part is 40/100 or 2/5 of the whole.