-90.68% is the change from 708 to 66
Calculation steps:
[( 66 - 708 ) ÷ 708] x 100 = -90.68%
Formula
Percentage change = [(66 - 708) / 708] x 100
Subtract the new number by the original number
66 - 708 = -642
-642 ÷ 708 = -0.9067796610169492
-0.9067796610169492 x 100 = -90.68%