-90.21% is the change from 286 to 28
Calculation steps:
[( 28 - 286 ) ÷ 286] x 100 = -90.21%
Formula
Percentage change = [(28 - 286) / 286] x 100
Subtract the new number by the original number
28 - 286 = -258
-258 ÷ 286 = -0.9020979020979021
-0.9020979020979021 x 100 = -90.21%