I normally do about 20% ea depending on if its a worth while split, if its less then a mil i try to do more than 20. As most of the money I make goes right into my magic/prayer level it's hard to do much more.
So I made the right choice to go do a farm run today, bankers started yelling, and ended up taking 9m away and tripling my bank
They seemed a little disappointed at the end
They decided they would do it in a POH next time heh