There were 3 rounds of interview process:
First round was a excel and VBA test. They will give you a system with questions on advanced excel(Conditional formatting, pivot,vlookup) and macro programming questions. They will look at your formulas and may ask few questions regarding it.
Second round was the interview round based on resume and case study. Case study given to me was to find out how many people will vote this time in election from the city of Bangalore.
Third round was the HR round