-98.46% is the change from 586 to 9
Calculation steps:
[( 9 - 586 ) ÷ 586] x 100 = -98.46%
Formula
Percentage change = [(9 - 586) / 586] x 100
Subtract the new number by the original number
9 - 586 = -577
-577 ÷ 586 = -0.984641638225256
-0.984641638225256 x 100 = -98.46%