-98.9% is the change from 455 to 5
Calculation steps:
[( 5 - 455 ) ÷ 455] x 100 = -98.9%
Formula
Percentage change = [(5 - 455) / 455] x 100
Subtract the new number by the original number
5 - 455 = -450
-450 ÷ 455 = -0.989010989010989
-0.989010989010989 x 100 = -98.9%