I'm a BE(mech)student.I prefer to do anMBA after BE at a good institute.What if I don't crack CAT with >95% though I feel 90-95 is possible?

I rate myself as a 90% getter given a neutral exam paper.I have no idea what so ever where my passion lies.I don't prefer an R&D kind of career but a secure,well paid,reputed management job in a top company.I am ready to work hard & do the needful but not to ultimately end up into unfruitful results