Hi Narayani,
The criteria for campus placement after computer science engineering differ according to the companies and the position you are applying to.
For academic, it varies from 70% to 85%.
The company may also ask for special requirements according to their position like Android, Java e.t.c.
Your projects and internship also plays a major role for grabbing the job.
So give your best.
Hope it was useful and your query was solved.
All the best :).