Ayush, IIT Delhi hasn't officially released its cut offs for the Academic session 2020-22. But going by their previous short listing criteria, the Shortlisting Index may be as follows: These are just the minimal percentiles required

There is no minimum CAT percentile for SC,ST,PWD.

Now Shortlisting Index is calculated using the formula:

SI = 80 x (Overall CAT score /Maximum CAT score of 2019) + weights for Bachelor Degree Marks + weights for Class 12 + weights for Class 10th Marks + weights for Additional Qualification Such as Master degree, Diploma + weights for Work Experience if any.

Based on your Graduation, 12th and 10th scores, additional points will be given and you can check them at the official page: http://dms.iitd.ac.in/html/MBA2018/Shortlisting%20Criteria%20for%20WAT%20&%20PI%20for%20MBA%20&%20MBA%20%28Telecom%29%202018-2020.pdf