-67.69% is the change from 455 to 147
Calculation steps:
[( 147 - 455 ) ÷ 455] x 100 = -67.69%
Formula
Percentage change = [(147 - 455) / 455] x 100
Subtract the new number by the original number
147 - 455 = -308
-308 ÷ 455 = -0.676923076923077
-0.676923076923077 x 100 = -67.69%