Hi

Actually,

marks vs percentile vs rank in JEE main depends upon a number of factors like

>>>> number of students that appeared in the  jee main exam,

>>>>kind of marks obtained by them ,

>>>>toughness level of the jee main examination for different shift etc.

But still with 203 marks, you can't get such low percentile, you must have calculated your marks wrong or would have made mistake while selecting the options.

Anyway,

I am assuming you from general category.

With  71.2 percentile

• Your  rank will be  around 294624 - 331200  as  per our rank predictor at

  JEE Main Rank Predictor 2021 - Predict your JEE Main ...

  JEE Main Rank Predictor - Know your expected IIT JEE Main 2021 Rank by ...

With this rank, your chances of getting a seat in NIT, IIITs is very low.  Even to get into lower NITs under other state you should have got at least around 45000 - 50,000 rank i. e 95.5 - 96 percentile.

Some of the   engineering colleges in which you hold a good chance are listed below along with their previous year cut off link  :-

----------)MH Saboo Siddik College of Engineering, Mumbai :- https://www.careers360.com/colleges/mh-saboo-siddik-college-of-engineering-mumbai/cut-off?college_id=4990&exam_sub_exam_id=2&ici=college_view_cutoffs

---------)College of Engineering and Management, Kolaghat  :- https://www.careers360.com/colleges/college-of-engineering-and-management-kolaghat/cut-off?college_id=2514&exam_sub_exam_id=2&ici=college_view_cutoffs

----------)Calcutta Institute of Technology, Howrah :- https://www.careers360.com/colleges/calcutta-institute-of-technology-howrah/cut-off?college_id=4735&exam_sub_exam_id=2&ici=college_view_cutoffs

To have  a personalised and complete list of colleges which you can get on the basis of the category you belong to,  your home state, your gender etc we have jee main college predictor  for which link is provided below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

To help you further,

To give you an idea of qualifying cut off, JEE mains 2020  qualifying  CUT OFF percentile to be eligible for jee advanced is given below for different category

>>>> General :-     90.3765335

>>>> GEN-EWS :-  70.2435518

>>>> OBC-NCL :-  72.8887969

>>>> SC     :-           50.1760245

>>>> ST :-                39.0696101

>>>> PwD :-            0.0618524

You can check the same at our page the link is provided below

https://engineering.careers360.com/articles/jee-main-cutoff

Thank you