That’s not an easy question to answer, as the answer would be along the lines of: in some countries they are, in some they are not. You can’t even pin that on continents.
Just an example. In Belgium 6,5% of the Freemasons are “regular”. A bit to the North, in the Netherlands over 90% of the Freemasons are “regular”. Quite a difference. More towards the South of Europe, “Continental” Freemasonry will be relatively larger, just as in South America. On the other hand, in the UK and USA the “regular” Masons are massively in the majority.
When it comes to ‘hard numbers’, my guess is that globally “regular” Freemasonry is larger than “Continental”, but that would make an interesting investigation.