-47.27% is the change from 823 to 434
Calculation steps:
[( 434 - 823 ) ÷ 823] x 100 = -47.27%
Formula
Percentage change = [(434 - 823) / 823] x 100
Subtract the new number by the original number
434 - 823 = -389
-389 ÷ 823 = -0.4726609963547995
-0.4726609963547995 x 100 = -47.27%