Fielding percentage is a statistic used to measure the effectiveness of a defensive player's fielding by comparing assists and putouts to errors. It is calculated by dividing the total number of chances accepted (assists and putouts) by total chances (assists, putouts and errors).
Also referred to as "Fielding Average".
The higher the fielding percentage, the more effective a player's fielding is considered to be. However, there are some issues with fielding percentage and its ability to completely measure the defensive effectiveness of a fielding player because fielding percentage only considers moments when a player handles the ball, and it doesn't measure plays where the fielder didn't handle the ball but should have.