-37.9% is the change from 868 to 539
Calculation steps:
[( 539 - 868 ) ÷ 868] x 100 = -37.9%
Formula
Percentage change = [(539 - 868) / 868] x 100
Subtract the new number by the original number
539 - 868 = -329
-329 ÷ 868 = -0.3790322580645161
-0.3790322580645161 x 100 = -37.9%