Zooming on camera screen question

[imac wannabe]

I have a new Canon 90D. When I take a photo and zoom all the way in using the on camera screen...how far am I zooming? It there any way to determine where 100% is in terms of clicks of the + button?

Paul

 

[mpfuchs]

Just zoom to 100% on your computer screen and compare how many clicks of zoom on the camera cover the same area of the picture?