Teams are ranked “according to a value that is a measure of their actual strength. A considerable amount can therefore be learned about the ranking value, or rating points, of a team,” FIFA states on their website.
The key criteria that go into the ranking are:
Result of the match
Home vs. away, or neutral ground
Importance of the match
Difference in WWR between the teams
Other big moves from the recent ranking include Korea DPR dropping out of the top 10 to 11th, the Netherlands moving into the top 10, and the biggest move in the rankings belonging to American Samoa, which moved up 17 places. Suriname had the biggest drop, falling 14 places.
