-21.2% is the change from 868 to 684
Calculation steps:
[( 684 - 868 ) ÷ 868] x 100 = -21.2%
Formula
Percentage change = [(684 - 868) / 868] x 100
Subtract the new number by the original number
684 - 868 = -184
-184 ÷ 868 = -0.2119815668202765
-0.2119815668202765 x 100 = -21.2%