-98.39% is the change from 558 to 9
Calculation steps:
[( 9 - 558 ) ÷ 558] x 100 = -98.39%
Formula
Percentage change = [(9 - 558) / 558] x 100
Subtract the new number by the original number
9 - 558 = -549
-549 ÷ 558 = -0.9838709677419355
-0.9838709677419355 x 100 = -98.39%