Hello Aspirant,

The calculation of the marks & category rank would be difficult. You may calculate your expected general rank by this formula

100 - your total percentile score is the percentage of people ahead of you. 874469 are the number of candidates appeared for Jan exam. So rank formula is (100 - your total score) X 869010 /100. If the number of candidates for April exam increased to 1200000 then your final rank shall be (100 - your total score) X 1200000/100

Using the formula
(100 - your total score) X 869010 /100

Your expected general rank will be 17,380.

With this percentile, You can have the chance to get National Institute of Technology Tiruchirappalli- B.tech ECE, EEE, Indian Institute of Engineering Science and Technology Shibpur- B.tech CSE, Civil, National Institute of Technology Karnataka Surathkal- B.tech ECE, Civil Etc.

To know your other admission possibilities, You can use JEE Main college Predictor tool given below.

Good Luck!