Your question best answered if you divulge the reasons why you bought Sameer in the first place.

The time to have come here is before you invested. Take the losses like a man wasa machozi

I think you can quit while there is still some money to be made. Infact looking at the economy and other factors eg next years election, I think there is no doubt that we are yet to see the worst at NSE. If I was in your position I would consider various factors like why you went for this share at first etc. If I choose to sell I would do the math of how many cellphones I have lost etc and I would classify my loss in NSE together with lost phones etc.

Why is Marshals showing a loss of 8.8% and price is stuck at 11.40?

Only a recession abroad will save this company as it will make inputs cheaper in the global market. So U can either wait for the recession abroad to set in proper (won't be too long) or just sell the darn thing already!!