-88.58% is the change from 709 to 81
Calculation steps:
[( 81 - 709 ) ÷ 709] x 100 = -88.58%
Formula
Percentage change = [(81 - 709) / 709] x 100
Subtract the new number by the original number
81 - 709 = -628
-628 ÷ 709 = -0.8857545839210155
-0.8857545839210155 x 100 = -88.58%