The percentage of Christians in Turkey fell from 19 percent ( possible 24 % dur to Ottoman undercounts ) in 1914 to 2.5 percent in 1927 , due to events which had a significant impact on the country 's demographic structure , such as the Armenian Genocide , the massacre of 500,000 Greeks and 375,000 Assyrian Christians , population exchange between Greece and Turkey , and the emigration of Christians ( such as Levantines , Greeks , Armenians etc. ) to foreign countries ( mostly in Europe , the Americas , Lebanon and Syria ) that actually began in the late 19th century and gained pace in the first quarter of the 20th century , especially during World War I and after the Turkish War of Independence . Ottoman censuses undercounted the number of Christians which was closer to 24-5 % of the population : 4.3 million not 3 million as reported . Today there are more than 160,000 people of different Christian denominations , representing less than 0.2 percent of Turkey 's population , Today there are more than 200,000-320,000 people of different Christian denominations representing roughly 0,3-0.4 percent of Turkey 's population
Armenian Genocide
Armenian Genocide
Christian emigration