Discussion on answer by Old_Lamplighter: How to handle counter offer

@Old_Lamplighter actually, none of those links contain any source for the 80% claim. Yes, it's a common myth but still, it's a myth that is not backed by any research. At least, I didn't find any.

@Old_Lamplighter the "sources" don't lead anywhere, they are empty claims like your answer. Everyone talks about some statistics and pulls numbers from thin air, but where are the statistics?? All this is doing so far is spreading a rumor, because that's what it is until proper study is cited.