-98.8% is the change from 747 to 9
Calculation steps:
[( 9 - 747 ) ÷ 747] x 100 = -98.8%
Formula
Percentage change = [(9 - 747) / 747] x 100
Subtract the new number by the original number
9 - 747 = -738
-738 ÷ 747 = -0.9879518072289156
-0.9879518072289156 x 100 = -98.8%