hi,

see iims shortlisted candidates based on academic score, professional experience and the cat score. however it also depends on other factors like number of participants, questions difficulty level, students category, overall the profile of candidates etc. so it is quite difficult to predict whether you would get shortlisted or not. however right now you have to study hard to achieve a excellent score in CAT to make the maximum possibility of shortlisting.

you may follow the below link to know about cat cutoff score of  IIM CALCUTTA.

https://bschool.careers360.com/articles/iim-calcutta-cutoff