60% of Oromos and 20% of Amhara are Muslims, Ethiopia is easily 50/50**hugs innocent little sister**
And this was in 2007 with the Muslims likely growing since then due to likely higher birth-rates (just the way it tends to go) and the fact that even back then I think it can be argued that the government was deflating the numbers. At least 40% of that country is Muslim, even when you remove Somalis from the picture.