-97.53% is the change from 729 to 18
Calculation steps:
[( 18 - 729 ) ÷ 729] x 100 = -97.53%
Formula
Percentage change = [(18 - 729) / 729] x 100
Subtract the new number by the original number
18 - 729 = -711
-711 ÷ 729 = -0.9753086419753086
-0.9753086419753086 x 100 = -97.53%