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
Roma 1 PSG 2 -10.9
-10.9
-1.3
Tottenham Hotspur 2 Roma 3 +2.0
+2.0
+1.5
Real Madrid 1 Manchester United 2 -1.0
-1.0
+0.1
PSG 2 Tottenham Hotspur 4 +0.9
+0.9
Juventus 1 Barcelona 2 -0.8
-0.8
Manchester United 2 Manchester City 0 -0.3
-0.3
Week of 7/26100.0*Chance wins title100.0*Promoted100.0*Average seed
Real Madrid 2 Barcelona 3 No
No
-0.0
Barcelona 1 Manchester United 0 +2.7
+2.7
-0.0
Manchester City 3 Tottenham Hotspur 0 -1.2
-1.2
+0.0
Manchester City 4 Real Madrid 1 +0.2
+0.2
-0.0
PSG 2 Juventus 3 +0.1
+0.1
+0.1
Roma 1 Juventus 2 -1.7
Points
Chance Will Win Championship