VIT Business School, Vellore Institute of Technology, Vellore

The XAT percentile above 70 can be safe for admission in VITBS. So your chances are very less.

Yes, above 60 percent is valid to enter into MBA.

Schedule for the VIT University MBA admission 2018 is given below:
VIT MBA Admission Date:
Issue of application form – 06th December 2017
Last date to apply online – 17th March 2018
Date of Essay writing test and P.I – 25th March 2018
If you have scored 85 percentile in MAT then you will definitely get admission in VIT.

The eligibility criteria for VIT-Vellore is a minimum of 60% marks in an undergraduate degree (minimum 3 years duration after 10+2) from a recognised university/institute.
Only the candidates who have studied in regular full-time programmes are eligible to apply.
After applying for the college, you will be called for a written assessment test (WAT) and a personal interview (PI).
The final selection will be made based on the merit list using a composite score with the following components:
Academic Performance
Profile-Work Experience, Awards and Recognition, etc.
WAT & PI score
Management Aptitude Test Score.

VIT MBA Admission offers two-year MBA and MBA (IB) programmes which consists of six trimesters. Students can choose a range of elective subjects from areas such as finance, marketing, human resources, information technology and systems, international business, operations and business analytics. The MBA program is offered out of the Chennai as well as Vellore campuses. The VIT MBA admission 2018 in International business is available only at the Vellore campus.
Refer this link: https://www.shiksha.com/mba/course/m-b-a-in-international-business-vit-business-school-vellore-242303

VIT B-School is better choice in terms of placement, industry connect and experienced faculty, small batch size.

VIT Business School is better option than NIT-Warangal for MBA program.
Better placement, VIT Business School also offers program like International Business, Business analytics and others. NIT-Warangal has small batch size.