Not sure if any website does it directly, but on Corsica, you can download the database and divide the Points (P) column by the Goals-For (GF) column at 5v5.
Yeh, for example so far this season (before todays games):
Galchenyuk: 13/13, 100%
Brickley: 12/13, 92.3%
Kucherov: 35/38, 92.1%
Rust: 11/12, 91.7%
Hayden: 9/10, 90%
Kase: 18/20, 90%
Vanek: 17/19, 89.5%
Stastny: 24/27, 88.9%
Upshall: 15/17, 88.2%
MacKinnon: 34/39, 87.2%
It is pretty much impossible to maintain over 80% over a decent sample. In the last 5 seasons, 2000+ TOI, players with 75%+:
McDavid: 124/151, 82.1%
Hall: 181/224, 80.8%
Kane: 209/260, 80.4%
Getzlaf: 190/238, 79.8%
Crosby: 212/266, 79.7%
Duchene: 171/215, 79.5%
Vanek: 154/196, 78.6%
Tarasenko: 195/249, 78.3%
Eichel: 83/106, 78.3%
Malkin: 142/183, 77.9%
H. Sedin: 142/183, 77.6%
Hudler: 121/157, 77.1%
Carter: 137/178, 77.0%
Benn: 206/268, 76.9%
Skinner: 155/202, 76.7%
Voracek: 157/206, 76.2%
Wheeler: 185/243, 76.1%
Perry: 178/236, 75.4%
Eberle: 171/227, 75.3%
Backstrom: 164/218, 75.2%
Gaudreau: 144/192: 75%