math
posted by Lilly .
find the percent of decrease from 280 to 210. round to the nearest tenth of percent if necessary

280  210 = ?
Take the difference and divide it by 280.
Change the decimal to a percent. 
percent=(210280)/280 x 100
notice as a percent of increase it is negative, as a decrease, change the sign. 
25%

Correct.

Your number is correct, but your sign is not.

What % of change is $48 to $53.76
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