-47.99% is the change from 819 to 426
Calculation steps:
[( 426 - 819 ) ÷ 819] x 100 = -47.99%
Formula
Percentage change = [(426 - 819) / 819] x 100
Subtract the new number by the original number
426 - 819 = -393
-393 ÷ 819 = -0.47985347985347987
-0.47985347985347987 x 100 = -47.99%