-15.38% is the change from 839 to 710
Calculation steps:
[( 710 - 839 ) ÷ 839] x 100 = -15.38%
Formula
Percentage change = [(710 - 839) / 839] x 100
Subtract the new number by the original number
710 - 839 = -129
-129 ÷ 839 = -0.1537544696066746
-0.1537544696066746 x 100 = -15.38%