-98.8% is the change from 749 to 9
Calculation steps:
[( 9 - 749 ) ÷ 749] x 100 = -98.8%
Formula
Percentage change = [(9 - 749) / 749] x 100
Subtract the new number by the original number
9 - 749 = -740
-740 ÷ 749 = -0.9879839786381842
-0.9879839786381842 x 100 = -98.8%