Aswin, NIT CALICUT offers admission to B.Tech as well as B. Arch courses through JEE MAIN PAPER1 AND PAPER2 respectively. The National Testing Agency , NTA conducts two papers viz. Jee Mains Paper 1 and Paper 2 for entrance to B.Tech and B.Arch respectively. In your case, you have not specified whether you want to inquire about your chances based on percentile secured in JEE MAIN PAPER-1 or PAPER-2. So, I am going to answer your query taking into consideration that the query is about JEE MAIN PAPER 2 for entrance to B. Arch course in NIT CALICUT and if your query was different, then you can let me know.

Now, to calculate your expected rank for B.Arch based on the percentile score that you have secured, you can use this formula:

So, (100 - your total percentile score) is the percentage of people ahead of you. Also, 112679 were the number of candidates who appeared for January exam.

So rank formula is (100 - your total score) X 112679 /100.

Also,note that the ranks will change according to increase or decrease in the number of participants in the next session.

Now, according to this formula, your expected rank is around 3943.This is the expected General or All India Rank and not the category rank as the category ranks are very tough to predict at this point of time. Now,In your case, your chances of getting admission to NIT CALICUT are very small irrespective of your home state and gender as evident from the previous years cutoff trends (to be honest your chances are next to zero for NIT CALICUT) as predicted from previous year cutoffs as follows:-

2019 NIT CALICUT CUTOFF RANK FOR GENERAL CATEGORY was as follows

If you want to check the previous year cutoffs, you can visit this link

https://engineering.careers360.com/articles/jee-main-cutoff-for-b-arch-b-planning

However, you have a very good percentile and it may fetch you the seats in many other good government and private institutions. In addition to it, you do have another attempt to go in APRIL JEE to improve your scores and hence the chances for a desired college.

If you want to know the colleges you would get at this score, you can this college predictor