10% of the Albanians in Kosovo are Christian — and by latest reports, the number of converts to Christianity is growing fast. 30% of Albanians in Albania proper are Christian — Albanian Orthodox or Catholic
Have no idea where you got that number from!
Wiki Again:
Islam (mostly Sunni, with a Bektashi minority[26]) is the predominant religion in Kosovo, brought into the region with the Ottoman conquest in the 15th century and now nominally professed by most of the ethnic Albanians, by the Bosniak, Gorani, and Turkish communities, and by some of the Roma/Ashkali-"Egyptian" community. I...About three percent of ethnic Albanians in Kosovo remain Roman Catholic despite centuries of the Ottoman rule.