Arjun, The cutoffs for admission to the colleges also depend upon 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 rank formula:

So, (100 - your total percentile score) is the percentage of people ahead of you. Also, note that 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 18445 . Remember that it is the expected General or All India Rank and not the category rank which is very difficult to predict at this point of time. To be honest, i n your case, chances of getting NITs are very very small irrespective of your home state and gender as evident from the previous year cutoffs of the NITs .

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 can try for some private institutions accepting JEE scores and also you have another chance in the next session, so concentrate on that.

If you want to predict what best colleges you would get at this score, you can visit this link