-98.87% is the change from 797 to 9
Calculation steps:
[( 9 - 797 ) ÷ 797] x 100 = -98.87%
Formula
Percentage change = [(9 - 797) / 797] x 100
Subtract the new number by the original number
9 - 797 = -788
-788 ÷ 797 = -0.9887076537013801
-0.9887076537013801 x 100 = -98.87%