Bengalis, including: the Marma , Mru , Tanchangya , Bawm , Khyang , Tripura , Lushei , Khumi , Chak , Kuki , Chakma , Rakhine or Arakanese , Riyang , Usui and Pankho . The religious composition of the population, as of 1991, is 47.62% Muslim, 38% Buddhist, 7.27% Christian,