To find out by how much Michael improved from the first game to the second game, you can subtract the score of the first game from the score of the second game.
Michael's scores:
- First game: 4,134
- Second game: 5,524
Improvement = Second game score - First game score
Improvement = 5,524 - 4,134
Improvement = 1,390
So, Michael improved by 1,390 points.