-89.23% is the change from 455 to 49
Calculation steps:
[( 49 - 455 ) ÷ 455] x 100 = -89.23%
Formula
Percentage change = [(49 - 455) / 455] x 100
Subtract the new number by the original number
49 - 455 = -406
-406 ÷ 455 = -0.8923076923076924
-0.8923076923076924 x 100 = -89.23%