-46.28% is the change from 819 to 440
Calculation steps:
[( 440 - 819 ) ÷ 819] x 100 = -46.28%
Formula
Percentage change = [(440 - 819) / 819] x 100
Subtract the new number by the original number
440 - 819 = -379
-379 ÷ 819 = -0.4627594627594628
-0.4627594627594628 x 100 = -46.28%