Simple is always good, especially when you’ve got a full day of Photoshop work ahead of you. Zooming in and out can be tedious, so here are two quick ways to zoom back to 100%.
First, you can double click the Zoom tool in the Photoshop Tools panel. This helps with the finger fatigue of constantly using keyboard shortcuts. That being said, the most dead simple way to zoom back to 100 is to just hit Command + 1.