-89.99% is the change from 729 to 73
Calculation steps:
[( 73 - 729 ) ÷ 729] x 100 = -89.99%
Formula
Percentage change = [(73 - 729) / 729] x 100
Subtract the new number by the original number
73 - 729 = -656
-656 ÷ 729 = -0.8998628257887518
-0.8998628257887518 x 100 = -89.99%