-98.02% is the change from 455 to 9
Calculation steps:
[( 9 - 455 ) ÷ 455] x 100 = -98.02%
Formula
Percentage change = [(9 - 455) / 455] x 100
Subtract the new number by the original number
9 - 455 = -446
-446 ÷ 455 = -0.9802197802197802
-0.9802197802197802 x 100 = -98.02%