-84.44% is the change from 585 to 91
Calculation steps:
[( 91 - 585 ) ÷ 585] x 100 = -84.44%
Formula
Percentage change = [(91 - 585) / 585] x 100
Subtract the new number by the original number
91 - 585 = -494
-494 ÷ 585 = -0.8444444444444444
-0.8444444444444444 x 100 = -84.44%