This property determines the content displayed by the detail labels. You can choose between the following options:

• Category: display only the category names for each slice (example – “Germany”).
• Data Value: display only the values for each slice (example – “€245,430”).
• Percent of total: display only the slice’s percentage against the entire donut chart (example – “24%”).
• Category, data value: display category names and data values (example – “Germany, €245,430).
• Category, percent of total (default setting): display category names and their percentages (example – “Germany, 24%”).
• Data value, percent of total: display the data values and percentages of each slice (example – “€245,430, 24%”).
• Category, data value, percent of total: display all three elements in the detail labels (example – “Germany, €245,430, 24%”). 

The default position for data labels is outside, but it can be changed under Label placement property