Hello student you can easily calculate and get your rank by using this formula.
(100-your total percentile) 869010 /100
In your case your rank must be around 52,922.
Im sorry to inform you but with this rank its difficult to get admission in nit jamshedpur with obt category, going with previous year cutoffs the last rank to get admission in metallurgical and materials engineering was 18,375(Femal Statequota).

Cut off vary every year on various factors like the level of question in the entrance examination and total number of applicants in that examination.

For more updates refer to the link mentioned below
https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-jamshedpur

Feel free to comment if you have any doubt
Good luck

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