80 percentile would fetch you a rank around 204600-230000 and sc category rank around 13000.As of now its tough to say because the analysis and also cutoffs change every year due to many factors like total students appearing for exam,difficulty level of paper etc.based on your rank you have very few chances to fetch seat in nits,iiits.you may have chances like iiit bhagalpur.you may have chances like nit agartala nit nagaland if you have any homestate quota.you need better percentile to fetch seat in top nits,iiits.workhard for the upcoming jeemain sessions..you can get closing rank for josaa official website: https://josaa.nic.in/Result/Result/currentorcr.aspx

.for more information to get a personalised report on what all chances you have for your rank refer to: https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

hope this helps,

thankyou.