Percent Eastern Orthodox - Country rankings:
The average for 2013 was 36.6 percent.The highest value was in Greece: 98 percent and the lowest value was in Finland: 1 percent. Below is a chart for all countries where data are available for: Percent Eastern Orthodox.
Eastern Orthodox Christians as percent of the total population, 2013
(percent, Source: The Cline Center for Democracy, TheGlobalEconomy.com)