Slugging percentage = Total bases รท At-bats
Count singles as 1 total base
Count doubles as 2 total bases
Count triples as 3 total bases
Count home runs as 4 total bases
Add all total bases together
Divide the total bases by the number of at-bats
Ignore walks, hit-by-pitches, sacrifices, and times reached on error
Example: 2 singles, 1 double, 1 home run in 10 at-bats
Total bases = 2 + 2 + 4 = 8
Slugging percentage = 8 รท 10 = .800