Plot:
* The movie condenses the plot significantly. Many important events and characters are omitted or changed.
* The movie alters the motivations and actions of characters. For example, Luke's role and motivations are simplified, and Annabeth's role is diminished.
* The movie changes the ending. The resolution of the conflict and the fate of certain characters are altered in the movie.
Characters:
* The movie changes the personalities and backstories of characters. Percy is portrayed as more rebellious and arrogant in the movie, while in the book he is more insecure and relatable.
* The movie combines characters. For example, the characters of Clarisse and Silena are combined in the movie.
* The movie introduces original characters. This includes the character of "Ares," who is not a major character in the book.
Themes:
* The movie focuses more on action and adventure than on the themes of identity and belonging.
* The movie downplays the importance of the Greek mythology aspect.
Overall:
The Percy Jackson movie is a very loose adaptation of the book. While it retains some elements of the story, it makes significant changes to the plot, characters, and themes. Many fans of the book consider the movie to be a poor representation of the source material.
If you're looking for a faithful adaptation of the book, the movie is not recommended. However, if you're looking for a fun, action-packed movie that loosely follows the storyline, it might be worth watching.