Here's why:
* Initial State: At the beginning of the story, Percy is confused and frustrated. He struggles with dyslexia and ADHD, feels alienated, and is unaware of his true nature as a demigod. He lacks confidence and self-awareness.
* Challenges and Growth: As he faces challenges like the Minotaur attack and his journey to Camp Half-Blood, Percy discovers his powers and learns to control them. He develops courage, resilience, and a sense of belonging. He also gains a deeper understanding of his heritage and his place in the world of gods and monsters.
* Transformation: By the end of the novel, Percy has transformed into a capable and confident demigod. He has learned to embrace his powers, overcome his fears, and trust in his abilities. He has also forged strong friendships and discovered a sense of purpose.
Therefore, Percy Jackson is a dynamic character in *The Lightning Thief*. He experiences significant internal change and growth as he confronts the challenges of his life and discovers his true identity.