-42.1% is the change from 867 to 502
Calculation steps:
[( 502 - 867 ) ÷ 867] x 100 = -42.1%
Formula
Percentage change = [(502 - 867) / 867] x 100
Subtract the new number by the original number
502 - 867 = -365
-365 ÷ 867 = -0.4209919261822376
-0.4209919261822376 x 100 = -42.1%