-46.64% is the change from 819 to 437
Calculation steps:
[( 437 - 819 ) ÷ 819] x 100 = -46.64%
Formula
Percentage change = [(437 - 819) / 819] x 100
Subtract the new number by the original number
437 - 819 = -382
-382 ÷ 819 = -0.46642246642246643
-0.46642246642246643 x 100 = -46.64%