-65.91% is the change from 839 to 286
Calculation steps:
[( 286 - 839 ) ÷ 839] x 100 = -65.91%
Formula
Percentage change = [(286 - 839) / 839] x 100
Subtract the new number by the original number
286 - 839 = -553
-553 ÷ 839 = -0.6591179976162098
-0.6591179976162098 x 100 = -65.91%