Year-over-year (YOY) is a useful tool for financial analysts, corporations, and investors. It allows for the comparison of financial figures from one point in time to the same point a year prior.

YOY Growth (%) = ($1,200,000 – $1,000,000) / $1,000,000 x 100 = 20% The YOY growth can be positive or negative, depending on whether the current year value is higher or lower than the previous ...

Year over year (YoY) is a way of slicing data to compare two different points in time. Read on to understand how it's used and why it matters.