Click on the Notebook menu and select Notebook Options.
In the Notebook Options dialog box, click on the Numeric Format menu to view a list of available formats. These settings correspond to the choices available with the MATLAB format command. The figure below shows the available numeric formats.
Click OK.
Note
Changes you make using the Notebook Options dialog box take effect for output generated after you click on the OK button. To affect existing input or output cells, you must re-evaluate the cells.