# Math Help - Percentage increase

1. ## Percentage increase

A worker's salary increases from $72000 to$81000. What is the percentage increase?

Code:
81000 - 72000 = 9000
9000 / 81000 = 0.11111111
0.11111111 x 100 = 11.111%
My scientific calculator gives me the answer 11.111%, but on online calculators the answer is 12.5% So what is the correct answer? :-)

2. 9000 / 72000 = .125, so 12.5%

3. Oh, snap! I must have misread it every time.

% Increase = increase / original price x 100%

Thank you. :-)