i got 98.17 percentile in jee mains 2020. i am from haryana. can i get cs stream in nit pune

HELLO AJAY
Congratulations for your result and qualifying JEE mains.
since it is very difficult to predict the exact rank but we do have a backup we have a formula to calculate the expected rank that is (100 – Total percentile) x 869010/100.So according to formula your expected rank for present percentile for January session comes out to be 15902 . Now the expected rank might change depending on the no of candidates appearing the april session. For ex if 12 lakh candidate appear the april session then just replace 869010 by 12 lakhs. But if you score above 85 percentile then you have a very decent chance of qualifying jee mains.

As far as now there is no NIT in pune.
BUt in maharashtra there is one such nit called VNIT Nagpur i can give you the details about that.

Now since the official cutoffs  fro college are yet to be decided but let us analyse your chances by looking into the previous year cutoffs data

JEE Main Cutoff for VNIT Nagpur( 2019,General male other state quota)

Computer Science and Engineering
General 4566

JEE Main 2018 Cutoff for VNIT Nagpur
Computer Science and Engineering
General 7020

After looking into the data it seems a little difficult for you to enter this institute
No worries since you have an april attempt left and most importantly baap of the exams i,e Advance which may directkly lead you into IIIts.
But if you are curious to know that which college you might land into with your percentile then you can use the college predictor link which has following features;
JEE Main 2020 College Predictor
Know your college admission chances based on your JEE Main Percentile, Home State, Caste, Gender, etc
Including premium institutes like NITs, IIITs and CFTIs, many States/ Institutes accept admissions through JEE Main. Know your chances in states like Maharashtra, West Bengal, Delhi
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JEE Main College Predictor 2020 - Predict Colleges based on your JEE Main Rank

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ALL THE BEST FOR APRIL AND ADVANCE!!