-85.25% is the change from 583 to 86
Calculation steps:
[( 86 - 583 ) ÷ 583] x 100 = -85.25%
Formula
Percentage change = [(86 - 583) / 583] x 100
Subtract the new number by the original number
86 - 583 = -497
-497 ÷ 583 = -0.8524871355060034
-0.8524871355060034 x 100 = -85.25%