The ranking cannot be solely determined by your KCET marks and board marks. There are a lot of criteria such as category, gender, state of domicile, etc. which are taken into consideration while coming up with the rank list by institutions and authorities, You would have seen many rank cutoff on various websites but there are no marks cutoff listed anywhere. This is due to the fact that authorities take so much factors in coming up with rank list. So the best thing would be to wait for the results!
Good luck!