-98.84% is the change from 778 to 9
Calculation steps:
[( 9 - 778 ) ÷ 778] x 100 = -98.84%
Formula
Percentage change = [(9 - 778) / 778] x 100
Subtract the new number by the original number
9 - 778 = -769
-769 ÷ 778 = -0.9884318766066839
-0.9884318766066839 x 100 = -98.84%