587.06% is the change from 85 to 584
Calculation steps:
[( 584 - 85 ) ÷ 85] x 100 = 587.06%
Formula
Percentage change = [(584 - 85) / 85] x 100
Subtract the new number by the original number
584 - 85 = 499
499 ÷ 85 = 5.870588235294117
5.870588235294117 x 100 = 587.06%