Hi Tony,
There's a good chance you've been here a while, isn't it? I believe you went through lower royalty rates which turned into a credit system (something similar to receiving 100% royalties for pre-purchased credits) which was dismantled to create a stable ceiling and a minimum royalty rate decided.
To understand how it works you can see here for yourself: https://www.cgtrader.com/levels
So now you're at 73% which will rise up to 80% with the reputation earned.