-98.6% is the change from 570 to 8
Calculation steps:
[( 8 - 570 ) ÷ 570] x 100 = -98.6%
Formula
Percentage change = [(8 - 570) / 570] x 100
Subtract the new number by the original number
8 - 570 = -562
-562 ÷ 570 = -0.9859649122807017
-0.9859649122807017 x 100 = -98.6%