there is some debate on that.
I think that to be fair you need to talk about juvenile, sub-adults and adults.
Juvenile snakes about 10-15% every 5 to 7 days, Sub adults I feed a bit less 8-10% every 7 days and adults get about 5% or less every 7 days. This is my method, it is easier for me to feed every 7 days regardless so I don't have to deal with this one feeds this week that one doesn't...
Many feed adults every 14 days and feed in the 10% range or so as the get bigger that drops back some. My big girl 3800gm gets 70gm-120 gm rat every 7 days or so I am not wedded to 7 but about that. So typically 5% or less. A 380 gm meal is quite large, I am not a breeder so there is no need to get size on fast.