-96.93% is the change from 586 to 18
Calculation steps:
[( 18 - 586 ) ÷ 586] x 100 = -96.93%
Formula
Percentage change = [(18 - 586) / 586] x 100
Subtract the new number by the original number
18 - 586 = -568
-568 ÷ 586 = -0.9692832764505119
-0.9692832764505119 x 100 = -96.93%