# calculating percentages

• February 7th 2010, 06:02 AM
gccrews
calculating percentages
How do I figure the percentage between 522 and 549? I know the difference is 27, but what is the percentage between 522 and 549? In other words, if I made 522 dollars one week, then 549 the next week, what is the percentage difference, or increase I guess, that I made?
Thanks.
• February 7th 2010, 06:40 AM
integral
calculate the difference:

$549-522=27$

divide by original value:
$\frac{27}{522}=5.17(10)^{-2}$

multiply by 100.

$5.17(10)^{-2}(100)=5.17
$

5.17%
• February 7th 2010, 07:59 AM
gccrews
Thanks