-52.75% is the change from 819 to 387
Calculation steps:
[( 387 - 819 ) ÷ 819] x 100 = -52.75%
Formula
Percentage change = [(387 - 819) / 819] x 100
Subtract the new number by the original number
387 - 819 = -432
-432 ÷ 819 = -0.5274725274725275
-0.5274725274725275 x 100 = -52.75%