# How do you calculate the percent change of Sales for 2007 $404,729 to Sales for 2008$571,320?

Sep 16, 2016

#### Explanation:

Take the difference New minus Old, divide this by Old, and multiply by 100 to get the percentage:

$\frac{571320 - 404729}{404729} \times 100$

Or:
Use ratio's. Set Sales 2007 to 100%, and get the number for 2008:

404729/(100%)=571320/(X%)

Cross-multiply:
404729xxX%=571320xx100%->
X=57132000/404729=141.16%

which is a 41.16% increase over the 100% we started with.