SOLUTION: this is the question to my pre algebra home work i don't get how to do it What is the percent of increase from 4.0 to 5.5 what is the percent of decrease from 1200 to 800

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Question 400410: this is the question to my pre algebra home work i don't get how to do it
What is the percent of increase from 4.0 to 5.5
what is the percent of decrease from 1200 to 800

please help i am flunking pre algebra and i don't want to take it again
thank you
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
%28%285.5+-+4.0%29%2F4.0%29%2A100+=+37.5% increase.
%28%28800+-+1200%29%2F1200%29%2A100+=+-33%261%2F3% (The negative sign means a decrease: There's a decrease of 33%261%2F3%).