Hello,
Your scores are quite impressive but even if you get 99.5 percentile then also selection in not guaranteed in any of the IIMs. First of all you will have to clear the sectional Cutoff of IIMs. Remember every IIM has a different sectional Cutoff and every IIM weightage pattern is also different. There are three sections in CAT, VARC, LRDI and QA. Basically you will have to score minimum 75-80 Percentile in every section and atleast 95-99 percentile to get a call from Indian institute of Management, Lucknow.
Now, if you successfully cleared sectional Cutoff, there will be three more rounds i.e. WAT, GD (Group Discuss) and PI (Personal Interview) round. Since you are a from a Non Engineering background you will get additional marks.
To know more about more details about Indian institute of Management, Lucknow, please go through this link
https://www.google.com/amp/s/www.careers360.com/university/indian-institute-of-management-lucknow/amp
Good Luck
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile