-48.27% is the change from 839 to 434
Calculation steps:
[( 434 - 839 ) ÷ 839] x 100 = -48.27%
Formula
Percentage change = [(434 - 839) / 839] x 100
Subtract the new number by the original number
434 - 839 = -405
-405 ÷ 839 = -0.4827175208581645
-0.4827175208581645 x 100 = -48.27%