-6.67% is the change from 839 to 783
Calculation steps:
[( 783 - 839 ) ÷ 839] x 100 = -6.67%
Formula
Percentage change = [(783 - 839) / 839] x 100
Subtract the new number by the original number
783 - 839 = -56
-56 ÷ 839 = -0.066746126340882
-0.066746126340882 x 100 = -6.67%