-98.78% is the change from 738 to 9
Calculation steps:
[( 9 - 738 ) ÷ 738] x 100 = -98.78%
Formula
Percentage change = [(9 - 738) / 738] x 100
Subtract the new number by the original number
9 - 738 = -729
-729 ÷ 738 = -0.9878048780487805
-0.9878048780487805 x 100 = -98.78%