-47.78% is the change from 812 to 424
Calculation steps:
[( 424 - 812 ) ÷ 812] x 100 = -47.78%
Formula
Percentage change = [(424 - 812) / 812] x 100
Subtract the new number by the original number
424 - 812 = -388
-388 ÷ 812 = -0.47783251231527096
-0.47783251231527096 x 100 = -47.78%