-83.21% is the change from 280 to 47
Calculation steps:
[( 47 - 280 ) ÷ 280] x 100 = -83.21%
Formula
Percentage change = [(47 - 280) / 280] x 100
Subtract the new number by the original number
47 - 280 = -233
-233 ÷ 280 = -0.8321428571428572
-0.8321428571428572 x 100 = -83.21%