-4.38% is the change from 868 to 830
Calculation steps:
[( 830 - 868 ) ÷ 868] x 100 = -4.38%
Formula
Percentage change = [(830 - 868) / 868] x 100
Subtract the new number by the original number
830 - 868 = -38
-38 ÷ 868 = -0.04377880184331797
-0.04377880184331797 x 100 = -4.38%