Hello,

With 78 marks your percentile is going to vary in between 88.03 - 91.15 and your rank is expected to be around 102300 approximately. You can check the expected percentile and rank by using Careers360 JEE Main Rank Predictor Tool, the link to the tool is given below

The rank predictor results are not the actual results because the predictor is based on the previous year marks vs rank trend so the actual result may vary. Last year the qualifying percentile was as follows for each category

• General: 87.8992241
• EWS: 66.2214845
• OBC-NCL: 68.0234447
• SC: 46.8825338
• ST: 34.6728999
• PWD: 0.0096375

If you belong to OBC-NCL category then you have decent chances to qualify in JEE Main and appear for JEE Advanced. But the qualifying cut off is subjected to change this year depending on total number of candidates appeared, difficulty level of exam etc. To know the list of institutes in which you may get seat you may use our JEE Main college predictor tool