-85.45% is the change from 584 to 85
Calculation steps:
[( 85 - 584 ) ÷ 584] x 100 = -85.45%
Formula
Percentage change = [(85 - 584) / 584] x 100
Subtract the new number by the original number
85 - 584 = -499
-499 ÷ 584 = -0.8544520547945206
-0.8544520547945206 x 100 = -85.45%