How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Saturday, 1/11100.0*Chance in playoffs100.0*Loser's Bracket100.0*Average seed
SF 71.78 BBR 81.42 -16.4
+7.6
-1.0
DYE 81.68 OW 69.96 +3.3
-2.1
+0.1
WITM 54.5 SS 64.96 +1.6
-1.1
+0.1
IS 97.1 CC 58.1 +0.8
-1.2
-0.0
DEM 82.78 NR 32.2 -0.1
If winner is:HomeAway
Sunday, 1/12100.0*Chance in playoffs100.0*Loser's Bracket100.0*Average seed
CC vs SF-21.6+15.8
+26.0-19.0
-1.3+1.0
OW vs PF-7.4+2.1
+7.7-2.2
-0.3+0.1
BBR vs WITM+3.3-6.0
-2.1+3.9
+0.1-0.2
DEM vs IS+3.9-2.1
+0.2-0.1
+0.1-0.1
NR vs DYE-0.2+0.2
+0.3-0.3

What If

Chances based on how well the SF finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedLoser's
TWW-Lplayoffs123456789101112BracketCount
72-0In212860No14,480,237
61-142.6%12313419404.4%25,056,011
50-2Out1019264690.510,603,160
Total:50.2%1431151712661021.3%50,139,408
Games Above .500
Chance Will Make Playoffs