-53.21% is the change from 280 to 131
Calculation steps:
[( 131 - 280 ) ÷ 280] x 100 = -53.21%
Formula
Percentage change = [(131 - 280) / 280] x 100
Subtract the new number by the original number
131 - 280 = -149
-149 ÷ 280 = -0.5321428571428571
-0.5321428571428571 x 100 = -53.21%