Chandan, The admission cutoffs for all the colleges depend on your category status, gender and home state, apart from your marks, of course. You have not specified these details in your query, so I am going to answer your query in a generic way.

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 9127 .As I have already told you, the admission to any college also depends on your home state and category status and you have not given details about the same but still in your case, your chances of getting NITs are very small irrespective of your home state and gender as evident from the previous year cutoffs of the NITs . However, you have some chances in NIT HAMIRPUR to get admission and maybe a very small chance in NIT RAIPUR, only if the cutoffs increase a little this year and your home state and gender considerations are favourable.

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

Also, you have a decent percentile which may help you in getting admission to a lot of state level and private institutions, so you should try for some state level colleges too. If you want to predict what best colleges you would get at this score, you can visit this link