-16.59% is the change from 850 to 709
Calculation steps:
[( 709 - 850 ) ÷ 850] x 100 = -16.59%
Formula
Percentage change = [(709 - 850) / 850] x 100
Subtract the new number by the original number
709 - 850 = -141
-141 ÷ 850 = -0.16588235294117648
-0.16588235294117648 x 100 = -16.59%