Business Management Studies

60 percentile in any one of the admission tests like CAT, XAT, MAT, GMAT, CMAT, ATMA is required. However, the selection is based on merit.

No, 89 percentile is too low. For top colleges, a percentile around 99 is required.

You need to either write MAT/CAT and go for the best campus, or else you can join some reputed campus for executive MBA programme for working professionals.

Yes, it is one of the reputed campuses. They offer very good academic culture and research opportunities. If you are looking for campus placement, this is the best place for that. The package usually ranges from 4.5 LPA to 8 LPA each year. The faculty members are Ph.D. holders with good teaching experience.

The colleges under Bharathiar University will accept 45% graduation score. So try to select colleges based on these.

You are late now. You can do it in January month intake. You need IELTS and have to apply for this now itself. Normally, MBA is a two-year programme in Canada. Only if you do two-year programme will you be allowed to stay back for three years.

Check out this answer on Shiksha. It may be helpful-
https://ask.shiksha.com/which-subjects-are-there-in-bba-qna-4064089?referenceEntityId=4064149

If you have completed your graduation, you can. The eligibility of MBA is merely graduation.
You shall appear in entrance tests or exams on the basis of graduation. You need to do well in the entrance exams and that will take you to MBA.
The history you mentioned needs to be overshadowed by your good work in the selection test.