The details presented by you are like seeing a jigsaw puzzle. Perhaps the following questions would help you find your own answers.
1. What is your academic record/rank in school finals?
2. Your joining Oil and Engineering -
How was this branch selected by you?
Was it by your choice or by Hobson's choice?
3. How did you get the job in Accenture?
Were there any questions about your qualification?
Did you have any idea of what sort of job you would be doing there?
What was your performance rating in Accenture over three years?
Did you make any exceptional contributions or achievements worth sharing?
4. What made you quit the job and take up an MBA in Finance?
Was it against stiff competition or easy to get in?
At that time, were you asked any questions about your B.Tech degree and the job?
If you can get very strong, positive answers to the above, you can project yourself as an adventure-loving, result-oriented, successful person. Every change you made was into a new area, and you came out with laurels.
In all probability, the interviewers would be questioning the depth of your experience and your proficiency in Finance. Prepare well, focusing on your specialization field in Finance and Project work.
Good Luck,
Regards,
V. Raghunathan
Navi Mumbai