# What is percent change?

Nov 6, 2014

If $x$ is some changing quantity, and $\Delta x$ be the change in $x$-value, then the percentage change can be found by

$\frac{\Delta x}{x} \times 100$

Example

What is the percentage change (discount) of $12 discount on$300 item?

{12}/{300} times 100=4% discount

I hope that this was helpful.