It's the percentage of your field goal shots made and field goals attempted, also known as a field goal percentage
.303
47%
He made 10962 out of 21686 shots with the Bulls, so that's about 50.55% field goal percentage.
2
40
58.2% for his career.
Field Goal (FG) percentage can be determined by diving the field goals made by the field goals attempted. For instance, if a player makes 5 field goals out of 8, then his/her field goal percentage is 62.5%. The field goal percentage is composed of all field goals made--whether a two-pointer or three-pointer. A player's three-pointer percentage is three-pointers made divided by three-pointers attempted. You can find a player or team's field goal percentage in the NBA section of any sports website or listed in the sports section of most U.S. newspapers.
passing
Artis Gilmore 59%
Ralph Sampson
he made 28 out of 46 field goal attempts. That's a FG% of 28/46 = 60.9% or .609.