-99% is the change from 598 to 6
Calculation steps:
[( 6 - 598 ) ÷ 598] x 100 = -99%
Formula
Percentage change = [(6 - 598) / 598] x 100
Subtract the new number by the original number
6 - 598 = -592
-592 ÷ 598 = -0.9899665551839465
-0.9899665551839465 x 100 = -99%