-43.03% is the change from 839 to 478
Calculation steps:
[( 478 - 839 ) ÷ 839] x 100 = -43.03%
Formula
Percentage change = [(478 - 839) / 839] x 100
Subtract the new number by the original number
478 - 839 = -361
-361 ÷ 839 = -0.4302741358760429
-0.4302741358760429 x 100 = -43.03%