-98.5% is the change from 601 to 9
Calculation steps:
[( 9 - 601 ) ÷ 601] x 100 = -98.5%
Formula
Percentage change = [(9 - 601) / 601] x 100
Subtract the new number by the original number
9 - 601 = -592
-592 ÷ 601 = -0.9850249584026622
-0.9850249584026622 x 100 = -98.5%