-98.63% is the change from 585 to 8
Calculation steps:
[( 8 - 585 ) ÷ 585] x 100 = -98.63%
Formula
Percentage change = [(8 - 585) / 585] x 100
Subtract the new number by the original number
8 - 585 = -577
-577 ÷ 585 = -0.9863247863247864
-0.9863247863247864 x 100 = -98.63%