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
Tottenham Hotspur 2 Roma 3 -19.7
-19.7
-1.4
PSG 2 Tottenham Hotspur 4 +13.5
+13.5
+1.5
Real Madrid 1 Manchester United 2 -4.9
-4.9
-0.1
Manchester United 2 Manchester City 0 -1.5
-1.5
-0.1
Juventus 1 Barcelona 2 -1.0
-1.0
-0.0
Roma 1 PSG 2 -0.2
-0.2
Week of 7/26100.0*Chance wins title100.0*Promoted100.0*Average seed
Manchester City 3 Tottenham Hotspur 0 No
No
-2.2
Real Madrid 2 Barcelona 3 No
No
-0.1
Barcelona 1 Manchester United 0 +4.4
+4.4
-0.0
Manchester City 4 Real Madrid 1 +0.7
+0.7
+0.1
PSG 2 Juventus 3 -0.3
-0.3
+0.1
Roma 1 Juventus 2 +0.1
Points
Chance Will Win Championship