-44.32% is the change from 819 to 456
Calculation steps:
[( 456 - 819 ) ÷ 819] x 100 = -44.32%
Formula
Percentage change = [(456 - 819) / 819] x 100
Subtract the new number by the original number
456 - 819 = -363
-363 ÷ 819 = -0.4432234432234432
-0.4432234432234432 x 100 = -44.32%