The minimum percentile you will need to be considered for admission to Christ University is 60 percentile. So, yes you can apply to Christ University for an MBA with a 69.99 percentile in CAT. Christ University takes into account many attributes while selecting students for their MBA program. Your class 12th board result will also be considered. However, do not lose hope if you do not have high marks in your 12th. Try to brush up your communication skills and try to do internships to build a strong resume. I would suggest you to list activities on your resume that suggest you have strong leadership skills as this will help you to increase your chances of getting selected. Also, perform well in your GD/PI session as well.