-89.03% is the change from 729 to 80
Calculation steps:
[( 80 - 729 ) ÷ 729] x 100 = -89.03%
Formula
Percentage change = [(80 - 729) / 729] x 100
Subtract the new number by the original number
80 - 729 = -649
-649 ÷ 729 = -0.8902606310013718
-0.8902606310013718 x 100 = -89.03%