I'm Engineer Boy in General Category. I'm expecting above 97%ile in CAT 2019 and sectional Percentile over 85% in all. Also, my 10th Score is 94.8%, 12th Score is 86.77%, Grad Score is 69.90% with 14 months of work experience. Should I expect a Call from NITIE, IIM B or IIT B ?

IIMs shortlist candidates for the interview stage based on their own criteria, which may be independent of each other. The process may include Written Ability Test, Group Discussion, and Personal Interviews. Performance in the CAT examination is an important component in the admission process. IIMs may additionally use other factors such as the previous academic performance of the candidates, relevant work experience, gender and academic diversity and other similar inputs in shortlisting and ranking of candidates at various stages of the admission process. The processes, academic cut-offs and the weights allocated to the evaluation parameters may vary across IIMs.

CAT SECTIONAL WEIGHTAGE:
IIM BANGALORE:
QA DLR VARC Overall
General: 80 80 85 90
NC-OBC: 70 70 75 80
SC: 65 65 70 75
ST: 60 60 60 70
PwD: 50 50 50 60

For all the Candidates shortlisted, the 10th and 12th board results are initially adjusted by dividing each such score by 90th percentile score of that board. And then an adjusted score is calculated for the Bachelor's degree for each of the candidates based on the final scores obtained by the candidate are used for the Bachelor's degree and professional degrees. For example,
CAT = 40
10th board = 20
12th board = 10
Bachelors = 20
Gender Diversity = 2
Work Experience = 8
The 40 points for CAT are derived from the performance in each of the three sections as follows:
Verbal & Reading Comprehension - 14 points
Data Interpretation & Logical Reasoning - 16 points Quantitative Aptitude - 10 points.

With 97 percentile in CAT, you can certainly expect to be shortliated for IIM B.

NITIE: The cut offs depend on the programme that you have selected. Typically, the cut offs range from 85 ton97 percentile depending on the programme that you have selected. Here you may have a chance too.