From the Wall Street Journal:
Seven countries in the region—Uruguay, the Dominican Republic and five in Central America—had a majority of non-Catholics in 2018, according to a survey by Latinobarómetro, a Chilean-based pollster. In a symbolic milestone, Brazil, which has the most Catholics of any country in the world, is expected to become minority-Catholic as soon as this year, according to estimates by academics that track religious affiliation.
“The Vatican is losing the biggest Catholic country in the world—that’s a huge loss, an irreversible one,” said José Eustáquio Diniz Alves, a leading Brazilian demographer and former professor at the national statistics agency. At the current rate, he estimates Catholics will account for fewer than 50% of all Brazilians by early July.