788.89% is the change from 81 to 720
Calculation steps:
[( 720 - 81 ) ÷ 81] x 100 = 788.89%
Formula
Percentage change = [(720 - 81) / 81] x 100
Subtract the new number by the original number
720 - 81 = 639
639 ÷ 81 = 7.888888888888889
7.888888888888889 x 100 = 788.89%