-46.52% is the change from 819 to 438
Calculation steps:
[( 438 - 819 ) ÷ 819] x 100 = -46.52%
Formula
Percentage change = [(438 - 819) / 819] x 100
Subtract the new number by the original number
438 - 819 = -381
-381 ÷ 819 = -0.4652014652014652
-0.4652014652014652 x 100 = -46.52%