Google SEO Question: How Much Plagiarism Percentage-wise Is Allowed?

I spotted a weird question that was asked of Google's John Mueller around plagiarism. The question was, what percentage level of plagiarism does Google allow so a site can rank in Google. Is it 5%, 10%, etc? The question is weird but I guess there are some myths out there around it being okay to plagiarize content for SEO purposes?

from Search Engine Roundtable https://ift.tt/6PLntIC