-40.62% is the change from 842 to 500
Calculation steps:
[( 500 - 842 ) ÷ 842] x 100 = -40.62%
Formula
Percentage change = [(500 - 842) / 842] x 100
Subtract the new number by the original number
500 - 842 = -342
-342 ÷ 842 = -0.40617577197149646
-0.40617577197149646 x 100 = -40.62%