I guess around 82,000 is the closing rank for admission in Computer Science Engineering Branch in LNCT Bhopal college. Talking about the percentile, the cutoff for JEE advance this year was more than 98% percentile , so I guess you are confused between the percentage and percentile. Don't stress out for now. Concentrate on your exams well. Try to score 150+ in JEE mains and then automatically you'll have a great percentile to be elgibile. if anyday you don't get CSE in LNCT mains then try for CSE in LNCT&S or in MEDI caps INDORE as this colleges are also good in placements and also in academics.