Thanks @invpriyaa for sharing the correct version. Sorry my bad. Was using EBIT instead of EBITA for margin calculation.
There is an investor presentation shared which is having all the related details - http://corporates.bseindia.com/xml-data/corpfiling/AttachLive/F947EBCE_0A27_40F4_B066_CFAA73EDDEE8_120107.pdf
-Muthu