On the day he became the Minister's assistant, Percy locked himself in his room to carefully ponder his next steps. He knew he had to choose a side; specifically, if he wanted to firmly secure his position as assistant to the Minister, he had to make the right choice between Fudge and Dumbledore.
Had Dumbledore truly gone senile?
Of course Percy was not foolish enough to think that. Anyone with a shred of sense knew what the situation in the Ministry was really like.
Chapter 897