-42.05% is the change from 868 to 503
Calculation steps:
[( 503 - 868 ) ÷ 868] x 100 = -42.05%
Formula
Percentage change = [(503 - 868) / 868] x 100
Subtract the new number by the original number
503 - 868 = -365
-365 ÷ 868 = -0.4205069124423963
-0.4205069124423963 x 100 = -42.05%