# How do you find the percent change given the original number is 25 and new number is 10?

Percentage change: color(green)(-60%)
The change from $25$ to $10$ is $\left(10 - 25\right) = \textcolor{m a \ge n t a}{- 15}$
As a percentage of the original value, $\textcolor{m a g \ne t a}{- 15}$ is
color(white)("XXX")color(magenta)(-15)/25 xx100% =color(green)(-60%)