-84.42% is the change from 584 to 91
Calculation steps:
[( 91 - 584 ) ÷ 584] x 100 = -84.42%
Formula
Percentage change = [(91 - 584) / 584] x 100
Subtract the new number by the original number
91 - 584 = -493
-493 ÷ 584 = -0.8441780821917808
-0.8441780821917808 x 100 = -84.42%