How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 7/19100.0*Chance wins title100.0*Promoted100.0*Average seed
PSG 2 Tottenham Hotspur 4 -19.1
-19.1
-1.4
Roma 1 PSG 2 +13.6
+13.6
+1.5
Juventus 1 Barcelona 2 -3.0
-3.0
-0.1
Manchester United 2 Manchester City 0 -1.2
-1.2
-0.0
Real Madrid 1 Manchester United 2 -0.9
-0.9
-0.0
Tottenham Hotspur 2 Roma 3 +0.3
+0.3
-0.1
Week of 7/26100.0*Chance wins title100.0*Promoted100.0*Average seed
Barcelona 1 Manchester United 0 +1.7
+1.7
-0.0
PSG 2 Juventus 3 No
No
-1.9
Manchester City 4 Real Madrid 1 +0.1
+0.1
-0.1
Real Madrid 2 Barcelona 3 +0.2
Roma 1 Juventus 2 +0.2
Manchester City 3 Tottenham Hotspur 0 +0.1
Points
Chance Will Win Championship