You can change the format of the data in each column. Click inside a column to apply a format, then click the Formatting tab to choose the appropriate format for the values in your column.
Change Data Formats
Note: In some instances, you might notice that your data is already formatted. For example, money symbols are already included in sales figures. Such formatting is inherited from metadata associated with the data source. However, you can override inherited formats whenever you want.
Copy and paste formatting
Once you have one column formatted the way that you want, you can use the Copy formatting and Paste formatting options on the Formatting tab to copy the formatting to other columns in your report.
Copy and Paste Formatting
If you want to remove the formatting that you applied to a column, click to select that column, then click Remove Formatting.