I don't know about the percentages.
But Lisk isn't a scam. They have established a legal foundation, no early(ICO) investor lost his money so far.
"Legal foundation" isn't good garantee. Once i worked in financial pyramid (and we were stealing money from people like you) and it had "legal foundantion" too. On Canarian island. Or on Dominicanian republic, i don't know exactly now (forget lol). Switzerland it's very famous offshore like different island (Cyprus as an example). It's not a Germany or USA or Great Britain. Everyone can register his own "legal foundation" by 300-500 $