-2.3% is the change from 868 to 848
Calculation steps:
[( 848 - 868 ) ÷ 868] x 100 = -2.3%
Formula
Percentage change = [(848 - 868) / 868] x 100
Subtract the new number by the original number
848 - 868 = -20
-20 ÷ 868 = -0.02304147465437788
-0.02304147465437788 x 100 = -2.3%