You can format numeric properties of a visualization using a wide range of ready-to-use formats. For example, you might change the aggregation type from Sum to Average.
Create or open the project that contains the visualization whose properties you want to change.
In the Visualize canvas, select the visualization.
In the properties pane for the selected visualization, use the Values tab to change the numeric properties.
For example, to change how a number is aggregated, use the Aggregation Method option.