-85.74% is the change from 582 to 83
Calculation steps:
[( 83 - 582 ) ÷ 582] x 100 = -85.74%
Formula
Percentage change = [(83 - 582) / 582] x 100
Subtract the new number by the original number
83 - 582 = -499
-499 ÷ 582 = -0.8573883161512027
-0.8573883161512027 x 100 = -85.74%