-26.46% is the change from 839 to 617
Calculation steps:
[( 617 - 839 ) ÷ 839] x 100 = -26.46%
Formula
Percentage change = [(617 - 839) / 839] x 100
Subtract the new number by the original number
617 - 839 = -222
-222 ÷ 839 = -0.26460071513706795
-0.26460071513706795 x 100 = -26.46%