-52.34% is the change from 812 to 387
Calculation steps:
[( 387 - 812 ) ÷ 812] x 100 = -52.34%
Formula
Percentage change = [(387 - 812) / 812] x 100
Subtract the new number by the original number
387 - 812 = -425
-425 ÷ 812 = -0.5233990147783252
-0.5233990147783252 x 100 = -52.34%