-98.9% is the change from 730 to 8
Calculation steps:
[( 8 - 730 ) ÷ 730] x 100 = -98.9%
Formula
Percentage change = [(8 - 730) / 730] x 100
Subtract the new number by the original number
8 - 730 = -722
-722 ÷ 730 = -0.989041095890411
-0.989041095890411 x 100 = -98.9%