What are the chances of placements for students who don’t have 60% marks throughout in VIT?

First of all you shouldn’t have joined VIT but now that you have and have not managed to score even 60%, the best way out of this is to leave placements, drop a year for preparing for some exam(CAT, GRE, GATE) and pursue your higher studies from a reputed chances. You have less chance in placements as many students will be above you and they will be given preference by the company.