Percy's King's Cross Station Sweater, Sorcerer's Stone

Percy's sweater is only seen in a few blurry shots, as we don't truly meet Percy until later in the series. A simple v-neck pullover with sewn on sleeves, the sweater appears to be knit from marled brown yarn, and fits a bit baggy - I'm assuming it is either a hand-me-down from one of the older Weasley boys, or it was made large to fit Percy for the entire year, if not longer.

While no pattern can be found for this specific sweater, because it is a more generic v-neck sweater, any pattern can be used to achieve this look.

Image Source: Home Of The Nutty