You can find the zoom with the use of your view tab. The great thing about the view tab is you will have an idea about how your whole document will look like. This can be helpful when you want to know how the document looks before you print it.
Some projects, reports, and assignments would require certain specifications before they would be fit for submission. The view tab will allow you to make some adjustments to the grid lines, the ruler and so much more. The fact that you can decide how large or how small you would like the document to be can already make things less complicated for you.