-42.19% is the change from 839 to 485
Calculation steps:
[( 485 - 839 ) ÷ 839] x 100 = -42.19%
Formula
Percentage change = [(485 - 839) / 839] x 100
Subtract the new number by the original number
485 - 839 = -354
-354 ÷ 839 = -0.42193087008343266
-0.42193087008343266 x 100 = -42.19%