Select the chart or individual pie wedges for which you want to show a label or series name.

Click Inspector in the toolbar, and then click the Chart inspector button.

Select Labels, and then drag the Position slider to place the data point label closer to—or farther away from—the center of the pie, or specify a value in the field to set the wedge’s distance from the center of the pie as a percentage of the pie’s radius.

To display the values in a particular format, make a selection from the Format pop-up menu and adjust the options:

• Number:  
  Displays the data point value with no units. In the Decimals field, specify how many decimal places you want to appear. To display negative values preceded by a minus sign or in parentheses, choose –100 or (100) from the pop-up menu. Select Separator if you want to separate the orders of magnitude on the left side of the decimal.
• Currency:  
  Displays the data point value as a monetary amount. Select the currency unit symbol from the Symbol pop-up menu. In the Decimals field, specify how many decimal places you want to appear. To display negative values preceded by a minus sign or in parentheses, choose –100 or (100) from the pop-up menu. Select Separator if you want to separate the orders of magnitude on the left side of the decimal.
• Percentage:  
  Displays the data point value as divided by 100. In the Decimals field, specify how many decimal places you want to appear. To display negative values preceded by a minus sign or in parentheses, choose –100 or (100) from the pop-up menu. Select Separator if you want to separate the orders of magnitude on the left side of the decimal.
• Date and Time:  
  Displays data point values with a date and time format.
• Duration:  
  Displays data point values as a unit of time, for example, seconds, minutes, or weeks.
• Fraction:  
  Displays data point values less than 1 as one integer over another. (If your values are greater than 1, you won’t see any fractional representation of your data.) Choose how accurately you want the fractions rounded off in the Accuracy pop-up menu. Choosing an option such as Halves or Quarters represents the values as a portion of the total pie, rounded to the nearest division you selected.
• Scientific:  
  Displays data point values in scientific notation, where 10 raised to a power is represented as E+ an integer. In the Decimals field, specify how many decimal places you want to appear.
• Custom:  
  Choose a custom number format you’ve already created, or create a new one. See Using Your Own Formats for Displaying Values in Table Cells for more information.

To show the series name, select Show Series Name.