How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Suva 0 Auckland City 3 -20.5
-20.5
-2.0
Suva 2 Amicale 3 -13.5
-13.5
-1.9
Pirae 3 Lupe ole Soaga 3 +1.9
+1.9
+0.1
Auckland City 3 Western United 0 -1.4
-1.4
Ba 3 Lupe ole Soaga 1 -0.5
-0.5
+0.1
Ba 3 Gaïtcha 0 -0.4
-0.4
-0.0
Western United 0 Amicale 1 -0.4
-0.4
Team Wellington 2 Tefana 1 -0.3
-0.3
Tafea 2 Hekari United 3 -0.3
-0.3
Gaïtcha 5 Pirae 2 -0.0
Hekari United 0 Team Wellington 2 +0.0
If winner is:HomeDrawAway
Tafea vs Team Wellington-0.2-0.0+0.2
Tefana vs Hekari United+0.0-0.2+0.1
Tefana vs Tafea+0.0-0.1+0.0
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Suva vs Western United+1.9+0.1-2.0
Ba vs Pirae+0.3+0.1-0.3
Gaïtcha vs Lupe ole Soaga+0.1-0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
31-0-0OutNo2304621202,213,837
10-1-0OutNo073043201,030,266
00-0-1OutNo21792,213,041
Total:OutNo1122014912325,457,144
Points
Chance Will Make Playoffs