Let me tell you one thing, I got 58% in my B.E(comp).
I tried in many companies but I didn’t crack any interview, not because of my percentage but because of lack of knowledge.
Then I started practicing everyday and within in 2 months I got the job.
So I think marks aren’t count when you go for the job, the thing which mean for any company is your positive attitude and your self-confidence.
Make them believe that you are the right person for the post/job.
Keep practicing and believe in yourself. If you fall down then learn from it and try hard than before, don’t be nervous or never loose self-confidence and you will definitely get what you want.