Mine declined from 96% to 49%. I posted another discussion about it. What did they do?

I do think there was an error with the translation skill percentage, which they corrected. My went from a number in the 90s when I was only in the middle of my Spanish tree, to now being 70% when I am much closer to the end then I was before. They must have realized that there was a calculation error - after all, when I tried to read articles before, I definitely couldn't understand 90-something percent of them. Oops.