-90.69% is the change from 709 to 66
Calculation steps:
[( 66 - 709 ) ÷ 709] x 100 = -90.69%
Formula
Percentage change = [(66 - 709) / 709] x 100
Subtract the new number by the original number
66 - 709 = -643
-643 ÷ 709 = -0.9069111424541608
-0.9069111424541608 x 100 = -90.69%