They're synagogues, NOT churches, and it's hard to know exactly how many Jews are in the world.
If you mean, what percentage of sports leaders are Jewish, then there are no known statistics on this subject.
The majority of the world's Jewish population, estimated at over 70-80%, observes the fast of Yom Kippur, which is considered the holiest day of the Jewish calendar.
Jews do not enter Christian churches because of the religious prohibition against participating in idolatry. The presence of icons and statues in Christian churches is seen as a form of idolatry from the Jewish perspective.
Jews do not have churches. The Jewish place of worship is called a synagogue in English.
Around 31.2% of the global population identifies as Christian, making Christianity the largest religion in the world.
20%
76%
8.2% of the deaths in WWII were Jewish Holocaust deaths
None. According to Jewish tradition, Abraham founded what is now called Judaism; and Judaism doesn't have churches.
World Council of Churches was created in 1948.
About 2% of the population of the United States is Jewish.
World Communion of Reformed Churches was created in 2010.