This articles is about the option available to change the decimal places in Excel 2011 for Mac. Excel by default automatically inserts decimal point after two digits but it allows users to change the default option using the Preferences.
Click the Excel menu and select Preferences from the displayed menu list.
In the Excel Preferences, click the Edit option under the Authoring section.
In the Edit window, tick the check box with label as Display this number of decimal places then enter the number after which you want to insert the decimal point. Click the Ok button to confirm and save the changes.