Hey Virmani.

If You belong to the general category and belong to the Chandigarh Pool quota  you will have a fair chance for admissiom in MCM with 84% in your boards. And you don't seem to have much chances for admission in SD as first of all the cut off is higher and is usually above 90% in SD and also you will have a disadvantage of not having Maths as a subject. You might have fair chances in MCM though.

But if you don't belong to the Chandigarh Pool quota then you don't seem to have much chances for either of the colleges.

Best of luck