-9.22% is the change from 868 to 788
Calculation steps:
[( 788 - 868 ) ÷ 868] x 100 = -9.22%
Formula
Percentage change = [(788 - 868) / 868] x 100
Subtract the new number by the original number
788 - 868 = -80
-80 ÷ 868 = -0.09216589861751152
-0.09216589861751152 x 100 = -9.22%