-98.8% is the change from 581 to 7
Calculation steps:
[( 7 - 581 ) ÷ 581] x 100 = -98.8%
Formula
Percentage change = [(7 - 581) / 581] x 100
Subtract the new number by the original number
7 - 581 = -574
-574 ÷ 581 = -0.9879518072289156
-0.9879518072289156 x 100 = -98.8%