-43.84% is the change from 812 to 456
Calculation steps:
[( 456 - 812 ) ÷ 812] x 100 = -43.84%
Formula
Percentage change = [(456 - 812) / 812] x 100
Subtract the new number by the original number
456 - 812 = -356
-356 ÷ 812 = -0.43842364532019706
-0.43842364532019706 x 100 = -43.84%