-98.73% is the change from 710 to 9
Calculation steps:
[( 9 - 710 ) ÷ 710] x 100 = -98.73%
Formula
Percentage change = [(9 - 710) / 710] x 100
Subtract the new number by the original number
9 - 710 = -701
-701 ÷ 710 = -0.9873239436619718
-0.9873239436619718 x 100 = -98.73%