-40.26% is the change from 842 to 503
Calculation steps:
[( 503 - 842 ) ÷ 842] x 100 = -40.26%
Formula
Percentage change = [(503 - 842) / 842] x 100
Subtract the new number by the original number
503 - 842 = -339
-339 ÷ 842 = -0.4026128266033254
-0.4026128266033254 x 100 = -40.26%