What percentage of your bankroll

[redsoxsox]

What percentage of your bankroll will you spend on MTT in a day. IVe heard that at the max 10% is the most you should lose on your bankroll in a day. IS this the general rule or is there no rule?

So, if I have a bankroll of $2500 for MTT and I plan to play only $50 MTTs with less than 300 people what should be the max percentage of my Bank roll I lose in a day if I bust out of the money in all of them that day.