-85.4% is the change from 582 to 85
Calculation steps:
[( 85 - 582 ) ÷ 582] x 100 = -85.4%
Formula
Percentage change = [(85 - 582) / 582] x 100
Subtract the new number by the original number
85 - 582 = -497
-497 ÷ 582 = -0.8539518900343642
-0.8539518900343642 x 100 = -85.4%