-42.17% is the change from 868 to 502
Calculation steps:
[( 502 - 868 ) ÷ 868] x 100 = -42.17%
Formula
Percentage change = [(502 - 868) / 868] x 100
Subtract the new number by the original number
502 - 868 = -366
-366 ÷ 868 = -0.4216589861751152
-0.4216589861751152 x 100 = -42.17%