-72.59% is the change from 839 to 230
Calculation steps:
[( 230 - 839 ) ÷ 839] x 100 = -72.59%
Formula
Percentage change = [(230 - 839) / 839] x 100
Subtract the new number by the original number
230 - 839 = -609
-609 ÷ 839 = -0.7258641239570918
-0.7258641239570918 x 100 = -72.59%