Rank 1 resolves to 100%
Rank 2 resolves to 80%
Rank 3 resolves to 60%
Rank 4 resolves to 40%
Rank 5 resolves to 20%

If two players share a position with equal number of scored goals, I will go by official Minutes per goal stats from Transfermarkt to resolve between the two. If that stat is the same number, I will give them both the rank per premierleague.com (which does shared 1st, shared 1st, 3rd place, 4th place, ...).