Colleges in West Bengal

Yes, You're eligible.
B.A. Acting is an undergraduate Acting, Dance, and Drama program.
Average Course Fee: INR 5,000 to 8 Lacs and varies from College to college.
Course Level: Graduate
Duration of the Course: 3 years
Admission Process: Entrance exam and Merit Based.

Your percentile is not very good. So, there is a very less chance to get this college.

Hi Himanshu,
As you have already completed your class 12th board exams with 78% marks, so you are eligible to take admission in BCom honours course of this college. You should apply for the same.
Best of luck.

Obviously, Amity University. Here are some points about Amity University:
Amity University is ranked 34 by NIRF 2018, 171180 by QS Brics 2018, 216 by QS Asia 2018 and 8011000 by QS World 2019. According to QS World Rankings, Amity is ranked 16th among Indian universities. Amity University offers 100%

Yes, St. Xavier's College, Kolkata offers B.Sc(Hons.) in economics.

Well there is no doubt that IHM Bangalore is far better, I am passout from IHM, Bangalore and I know things from my personal experience IHM Bangalore is good if you want to for hotel management.

According to: http://iem.edu.in/admission/ (official site)
Eligibility Criteria for BCA:
Candidates must have passed Class XII* /Equivalent Qualifying Examination with English and Mathematics / Computer Science/Computer Application / Information Practices/Statistics/Basic Science II / Business Economi