The tendency among many RCs is to deny the veracity of such stats as testify to that, but more are here: http://www.peacebyjesus.com/RC-Stats_vs._Evang.html
Hey Brother, just scanning the good news.
I think one thing of note that doesn't get discussed is what are the core beliefs of the Evangelical Born Again Christians that are sharing The Gospel with the lost in Brazil. I think you will find that it is not Reformed/Covenant Theology, rather it is more Dispensational. The Born Again Christians sharing The Gospel typically believe in a literal interpretation of Scripture. In general, where we see Christianity growing this is the case.