-85.32% is the change from 586 to 86
Calculation steps:
[( 86 - 586 ) ÷ 586] x 100 = -85.32%
Formula
Percentage change = [(86 - 586) / 586] x 100
Subtract the new number by the original number
86 - 586 = -500
-500 ÷ 586 = -0.8532423208191127
-0.8532423208191127 x 100 = -85.32%