-43.97% is the change from 812 to 455
Calculation steps:
[( 455 - 812 ) ÷ 812] x 100 = -43.97%
Formula
Percentage change = [(455 - 812) / 812] x 100
Subtract the new number by the original number
455 - 812 = -357
-357 ÷ 812 = -0.4396551724137931
-0.4396551724137931 x 100 = -43.97%