-56.79% is the change from 280 to 121
Calculation steps:
[( 121 - 280 ) ÷ 280] x 100 = -56.79%
Formula
Percentage change = [(121 - 280) / 280] x 100
Subtract the new number by the original number
121 - 280 = -159
-159 ÷ 280 = -0.5678571428571428
-0.5678571428571428 x 100 = -56.79%