-24.31% is the change from 839 to 635
Calculation steps:
[( 635 - 839 ) ÷ 839] x 100 = -24.31%
Formula
Percentage change = [(635 - 839) / 839] x 100
Subtract the new number by the original number
635 - 839 = -204
-204 ÷ 839 = -0.2431466030989273
-0.2431466030989273 x 100 = -24.31%