Hey, your academic profile is below average but category might benefit you. I would suggest you to aim for 99.5+ and then wait for calls. Every year the criteria can differ. Just prepare well for CAT
Although your academics are on the lower side, your work experience of 3 years and your category might help you. Also the fact that you are a non-engineer. I would suggest you to aim for 99% and above in CAT.
Since you are OBC, if you get 97.5+%ile, you can get a call and convert it. However, look at ways to build your profile to compensate for your past academics.
Besides this, I also suggest you to look at other MBA colleges that do not accept CAT score and prepare for them
Hope that it helps!!