-97.94% is the change from 729 to 15
Calculation steps:
[( 15 - 729 ) ÷ 729] x 100 = -97.94%
Formula
Percentage change = [(15 - 729) / 729] x 100
Subtract the new number by the original number
15 - 729 = -714
-714 ÷ 729 = -0.9794238683127572
-0.9794238683127572 x 100 = -97.94%