Don't think that info is available since it would be different for each player. The way I always understood it was what ever is getting buffed by a certain percent it goes by your total stat. For instance I am azure fang I am using the water buff which increases ninjutsu of 3 water ninja by 40% for 5 rounds. So to die it down I have 6900 ninjutsu so I divide that by 40% and that is my buff that is stacked on top of the 6900. Sometimes though it isn't soley based off of the main character sometimes it does it on each ninjas stats. I hope this helped you understand. Atleast this is how I have come to understand it by myself.