Year-Over-Year = YoY

Year-over-year (YOY) is a method of evaluating two or more measured events to compare the results at one period with those of a comparable period on an annualized basis.
YOY comparisons are a popular and effective way to evaluate the financial performance of a company.

The formula used to calculate the year over year (YoY) growth rate is as follows:

(1) $\begin{array}{l}YoY=\left(\frac{A}{B}-1\right)\cdot100\%\end{array}$ ,

where

$\begin{array}{l}\mathrm{YoY}\end{array}$	Year-Over-Year
$\begin{array}{l}\mathrm{A}\end{array}$	current period value
$\begin{array}{l}\mathrm{B}\end{array}$	previous period value

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