Currently there is no way of knowing at what scale the image is displayed.
Please display on the bottom.
How often do you use zoom modes other than fit-to-window and full-size?
For full-size IMatch would always display 100%, and for fit-to-window something like 16,43566%. I'm not sure that this info is real useful.
How would I know if I have zoomed the image to say 120%, or 90% or 50%. I think that information is quite important.
I often adjust the zoom to make a long thin panorama fill the screen vertically. I then scroll left and right to inspect it.
In this case of course the zoom percentage is of little interest.
( Which made me just realize that a ZOOM to fill vertically (horizontally) would be another request one could make)
Zoom display added for build 5.0.150