1400 Earths fit into Jupiter
Diameter of Earth = 12756.2km
Diameter of Jupiter = 142984km
Basically the diameter of this impact hole is 12756.2km
So, if the impact is 8.921417781010462709114306495 8317% of Jupiter's diameter, we need to get that percent of Earth's diameter.
The asteroid would be 1138.060659234599675488166508 1407km scaled on Earth. There are 1.6093 kilometeres in a mile, so we divide by 1.6093.
707.17744313341184085513360351706 miles