context: Estimates for the number of Roman Catholics vary from 70% of the population, to as much as 90%. The CIA Factbook lists 92% of the country is Catholic, but only 20% are practicing regularly or weekly at a church service. The Jewish population is about 300,000 (around 0.75% of the population), the community numbered about 400,000 after World War II, but the appeal of Israel and economic and cultural pressures at home led many to leave; recent instability in Israel has resulted in a modest reversal of the trend since 2003. Islam in Argentina number about 500,000-600,000, or approximately 1.5% of the population; 93% of them are Sunni. Buenos Aires is home to one of the largest mosques in Latin America. A recent study found that approximately 11% of Argentines are non-religious, including those who believe in God, though not religion, agnostics (4%) and atheists (5%). Overall, 24% attended religious services regularly. Protestants were the only group in which a majority regularly attended services.
question: How many points is the difference between the minimum and maximum estimate of Roman Catholics?
answer: 20