Dear Student,
Its good to know that you want to persue commerce courses from the top colleges.
But unfortunately I would like to tell you that with a percentage of 67.85 in HSC you cannot get admission in no Top commerce college.To get a top college you need to have nothing less than a 90%. I would suggest you that you can try for Private colleges where admissions are done on the basis of entrance exams.
All the best.I hope this was helpful to you.