I think there is a difference between identifying with a particular religion and actually practicing it. When we toured the UK in 2012, we were told that less than 10% of the population were practicing Christians.
There is definitely a difference - the numbers here are those who identify as but not necessarily are practicing Christians. Im not too sure about the UK specifics for practicing Christians, only that 60% would regard themseleves as being generally "Christian."
Regardless, the nation is now officially called Myanmar. "Burma" is already an accepted answer, but the name that comes up I try and make as official as possible for the sake of conistency
Don't call Burma, Myanmar. That is the name that terrorists in the country want to call it.