If you are using Adobe Illustrator: In Illustrator, you can easily check the CMYK values of the Pantone color by selecting the Pantone color in question and viewing the Color palette. Click on the little CMYK conversion icon and your CMYK values will be displayed right in the Color palette.
If you are using Adobe Photoshop: To reset your color mode from RGB to CMYK in Photoshop, you need to go to Image > Mode. Here you'll find your color options, and you can simply select CMYK.