CAT

No, it's harder to get into Institute of Management, Banaras Hindu University with 70 percentile.

The Institute of Management Studies, Banaras Hindu University, is unlikely to accept candidates with 70% in CAT, as the CAT percentile required for admission to top MBA colleges generally ranges from 80 to 99. 

Also, the cutoff according to current year's scenario is 85 percentile. So, you have to score at least 85 percentile to get into the Institute of Management, Banaras Hindu Univesity.

However, there are several other colleges whose cutoff lies between 70 percentile to 80 percentile. Some of these include the Institute of Management Development and Research, Pune, Acharya Bangalore Business School, Bangalore, and SIES College of Management Studies.

Therefore, the chance of getting into Institute of Management, Banaras Hindu University is low in 70 percentile. But there are other options that you can consider.

The eligibility criteria for admission to the MBA programme at Balaji Institute of Modern Management (BIMM), Pune, requires candidates to secure at least 50% overall marks (45% for reserved category) in  undergraduate courses from UGC recognised universities.
 Candidates who are currently in the final year of their degree and are confident of scoring at least 50% overall can also apply for the MBA course.
 Additionally, it is mandatory for candidates to have appeared for at least one  of her CAT/MAT/XAT/CMAT exams.
 The selection process for BIMM's MBA programme  is entry-based and the candidate is required to obtain a valid score in her CAT/MAT/XAT/CMAT or MAH-CET and then undergo a group discussion and  personal interview.
 There is no specific mention of the minimum CAT percentile required for admission to BIMM's MBA program.
 The institute has no minimum entrance exam score, as the admissions committee is interested in assessing the true talent of candidates.

Yes, you can get into Kalasalingam Academy of Research and Education with 70% in CAT. 

An online MBA is suited for working professionals who want to take a jump in their career and move towards leadership roles and freshers who do not want to fully block 2 years only for earning a degree. It opens up a plethora of global opportunities without uprooting your existing direction of life. MBA programs focus on developing the knowledge and skills necessary for careers in business and corporate houses. One can get endless opportunities after getting an MBA degree. 

Kalasalingam Academy of Research and Education is ranked 801 in World University Rankings by Times Higher Education.

Candidates are admitted to MBA programmes based on their performance in the entrance exam, group discussion (GD), and personal interview (PI). In addition to having a valid scorecard from exams like the CAT, XAT, MAT, ATMA, CMAT, etc., candidates must have finished their graduation in any discipline. The IIM administers the Common Admission Test (CAT), a national business aptitude test, to candidates seeking admission to the MBA programmes provided by its 20 campuses and more than 1,200 B-schools across India. It is anticipated that the CAT 2023 cutoffs for admission to the IIMs will be between the 95–100 percentile range across all categories. The CAT cut off percentile for top IIMs is anticipated to be between 98 and 100 percentile for students in the general category. For non-IIMs, the CAT cut off 2023 will be in the range of 94-100 percentile.