Change the default Zoom level in PowerPoint
In this tutorial, we will explain how to: Zoom Level serves as a magnification that allows zooming in and zooming out of slides.
1] How to set a specific Zoom
On the View tab in the Zoom group, click the Zoom button. A Zoom dialog box will appear. Inside the Zoom dialog box, type the percentage you want in the Percent Box or click any of the Presets. The other method is to click the Zoom Level button on the status bar on the right
2] How to adjust the Zoom Level
On the left and right end of the Zoom Slider on the status bar, click the Zoom in or Zoom out button until you get the size you want. Drag the Zoom Indicator on the slider either left or right to Zoom in or Zoom out until you get the size you want.
3] How to make the current slide fit the slide pane
On the View tab in the Zoom group, click the Fit to Window button. The Fit to window button zoom your presentation so that the slide fills the window, If you zoom the presentation slide to one hundred and seventy percent, Fit to Window will bring the slide to its original size. At the right end of the status bar, click the Fit Slide to Current Window button; it does the same action as the Fit to window button. Read: How to link Elements, Content or Objects to a PowerPoint slide. I hope this helps; if you have questions, please comment below.
