Instead, you might want to reduce it to -8 or -4. If your voice is already pretty deep, then that -12 value might be too much. The problem here is that everyone’s voice is different. In the screenshot above, I set the Percent Change value to -12. It is important to note that the goal here is to make our voice as deep as Darth Vader’s.

Once you have done that, the Change Pitch menu will appear. After that, you will need to open the Effect menu at the top and select Change Pitch.