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
WITM 54.5 SS 64.96 -18.4
+12.5
-1.0
DEM 82.78 NR 32.2 +2.6
-1.1
+0.1
DYE 81.68 OW 69.96 +0.5
PF 87.98 FRAT 67.2 +0.3
SF 71.78 BBR 81.42 -0.3
+0.2
IS 97.1 CC 58.1 -0.1
-2.5
If winner is:HomeAway
Sunday, 1/12100.0*Chance in playoffs100.0*Loser's Bracket100.0*Average seed
BBR vs WITM-23.5+23.5
+20.7-20.7
-1.2+1.2
NR vs DYE+4.9-4.9
+3.7-3.7
CC vs SF+4.8-4.8
+1.8-1.8
+0.1-0.1
DEM vs IS-3.3+3.3
+3.6-3.6
-0.2+0.2
OW vs PF-2.1+2.1
+6.5-6.5
-0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedLoser's
TWW-Lplayoffs123456789101112BracketCount
72-096.4%24332204No3,857,138
61-118.23153727134017.4%7,708,161
50-2Out1815364091.03,861,429
Total:33.2%011913201610111031.5%15,426,728
Games Above .500
Chance Will Make Playoffs