IIM Calcutta - Indian Institute of Management

Hello Dadu Dayal, It's very nice to hear from you that you have already started thinking of doing your MBA from IIM Kolkata. To have such precise and clear-cut aim is indeed a great trait of a student. Once you have decided on your aim, you can definitely work towards achieving it. You have got reas

The sale of application forms has already begun. The date for sale and receipt of application form is 12th May 2019. The entrance examination for advertising and PR will be on 26th May 2019.

Hello! There are a total of 454 students pursuing MBA at IIM Kolkata. https://www.iimcal.ac.in/programs/pgp/placements/job-placements
Here is the source link.

Hello! Well, nothing can be said with complete surety but a score of at least 99 percentile should be sufficient to get an interview call from some (if not all) of the B-schools mentioned above. Good luck!

I hope this link will help you https://www.shiksha.com/college/indian-institute-of-mass-communication/iimc-entrance-exam

Yes, graduation percentage are negotiable.
Good luck.

You can well prepare for CAT, and other management examination and then you can get IIM for your further studies and after IIM, you will get good opportunities for yourself.
Good luck.