All decimal places of the number field are displayed in the diagram. How can the decimal places be reduced to two decimal places?

 

The formatting of the numbers in the diagram is controlled by the attribute Format attribute in the properties of the Series Labels (series headings).

Click on the chart. Under the tab Properties you will find under 1. Diagram the subitem Series Headings. This contains the attribute Format, in which the decimal places can be defined. N2, for example, stands for two decimal places.