Complex sentence: Till 2007 remaining 50% are distributed over other NITs on a reciprocal basis.But since 2008 batch remeaning 50% was made open i.e. any one from other state can claim seat.
Split into simpler sentences: Till 2007 remaining 50% are distributed over other NITs on a reciprocal basis. However, since the 2008 batch, the remaining 50% was made open i.e. any one from other state can claim seat.