The one which comes to mind, since I just read it myself recently, is in Ascendance Of A Bookworm. In the webnovel, the scene where Myne introduces parue-cakes to Lutz's family is from Lutz's point of view, while in the light novel, it's from Myne's. Same events, but we actually see Myne's thought processes as she tries out the parue, but we also lose out on the brief mention that Lutz and his brothers were very worried about Myne trying to cook on a hot stove.
Also there's the part where Myne is extremely angry about her destroyed clay tablets, which was from the viewpoint of Myne's father in the webnovel, but from Myne's viewpoint in the light novel. The webnovel version mostly dealt with the aftermath (since Myne's father was not actually at the scene of the incident), while the light novel version described how it happened.
