3/4 of the way up into the third deck - which has to be around 450 feet by itself. Not only that, but it got out of the ballpark in 2 seconds, which lets you know it was still traveling as it was hit incredibly incredibly hard
550+ foot homerun all day long if he hit that into McCovey cove
now compare that ball to this homerun - which I would guess is also 430 - 450 feet (way into the cove). Look at how much lower the launch angle of this ball is vs the yankee stadium homerun