I think it's probably not even a quarter. It's quite frustrating to see so many surveys pop up nowadays, where they pull out some numbers out of their magical hat, but then don't disclose how that survey was conducted.

In a more realistic setting, I don't expect the actual percentage of people owning Bitcoin or any other crypto coin to be higher than 1%.... the actual use just doesn't rhyme with the high percentages these surveys spit out each time.

The only players in this space who know what the actual rate of adoption is are fiat exchanges such as Coinbase, but they haven't ever disclosed any actually useful figures, only raw metrics such as the number of accounts created.