-85.9% is the change from 709 to 100
Calculation steps:
[( 100 - 709 ) ÷ 709] x 100 = -85.9%
Formula
Percentage change = [(100 - 709) / 709] x 100
Subtract the new number by the original number
100 - 709 = -609
-609 ÷ 709 = -0.8589562764456982
-0.8589562764456982 x 100 = -85.9%