-2.42% is the change from 868 to 847
Calculation steps:
[( 847 - 868 ) ÷ 868] x 100 = -2.42%
Formula
Percentage change = [(847 - 868) / 868] x 100
Subtract the new number by the original number
847 - 868 = -21
-21 ÷ 868 = -0.024193548387096774
-0.024193548387096774 x 100 = -2.42%