The other students could have a range of reactions. Some might be sympathetic and try to befriend Harry more. Others might be afraid, especially if the abuser is still around. But overall, it would create a stir in the wizarding community, and there would be a general outpouring of concern for Harry's well - being.
His life changes significantly. Firstly, he no longer has to hide the abuse. He can be more open about his feelings and experiences. This could lead to him getting the help he needs, like emotional support from his friends.
In this kind of fanfiction, there could be a lot of shock and disbelief among the characters at first. His friends might feel guilty for not noticing the signs earlier. They would probably become extremely protective of Percy.
His family member, if there is one in the story who is perceptive and caring. They might have seen some small signs over time but not fully understood what was going on. Once they find out about the abuse, their natural instinct to protect their family member would kick in, and they would be one of the first to react, showing concern and a determination to make things right for Percy.
In the fanfiction, the abuser might be ostracized by the society. People would start to question his motives and actions. His influence in the wizarding world, whether it's in business or politics, would decline rapidly. The abuser might also have to face the wrath of some of the more powerful and just characters in the story. They could use their influence to make sure the abuser is held accountable for his actions.
In the fanfic 'Malfoy's Revelation', Malfoy is paired with Harry for a project. As they spend time together, Malfoy notices some strange behaviors from Harry, like flinching at sudden movements. After some snooping around, he discovers that Harry has been abused. This new knowledge makes Malfoy more empathetic towards Harry and he tries to help him in his own way, which includes standing up for Harry against some of their mutual enemies at Hogwarts.
Some characters might be shocked. For example, Harry Potter could feel a sense of pity and might try to help Draco in some way. Hermione might start to analyze the situation and look for ways to protect Draco from further abuse. Ron, on the other hand, might be a bit more hesitant at first but would eventually come around to support Draco.
Well, first of all, the students would probably be shocked. His friends, like Ron and Hermione, would be extremely angry at the Dursleys. They might try to comfort Harry more often. And the school itself could start providing special resources for Harry, such as counseling or extra protection spells. Also, there could be a big change in the way the wizarding community views Harry. Instead of just seeing him as the 'Boy Who Lived', they would see him as a victim who needs support.