Switching over Food

[Murf]

I have been slowly switching Rocky's food over and I am at the stage now where its 75% new and 25% old.Over the course of the switch he's stools have become softer but not bad but yesterday was the first day he went to the 75% new and last night he woke me up wanting to go out (which he never does ) and had diarhea and also went pee in his crate which he has never done.Do you think I should just switch him back to his old food or am I jumping the gun?

Thanks!