Hello aspirant

With 84.8 percentile you expected All India rank will be around 132,089.52. If you are from general category you are not qualified in jee MAIN..

Now you will get a seat in SSN or PSG depends on previous year's cut off of these colleges. Cut off depends on number of candidates appeared and qualified in exam . Difficulty level of exam, previous year's cut off of that college.  Last year overall cut off of Jee main was 89+ percentile. This year it will obviously cross 90 percentile.

2019 and 2018  cut off of SSN college is as follows

course                        closing rank

2019                         2018

Mechanical engineering       3061                3646

biomedical engineering         3494                7234

chemical engineering             3994                6785

now depending on these observations you can predict your chances to Admission.

However following link will help you to predict your college

https://engineering.career360.com/jee-main-college-predictor