I'm assembling panels of multiple images in Illustrator CS5. The images are similar, but of slightly different sizes, therefore I put each image in a clipping mask, so the final sizes of clipped images are the same, so they can be arranged in a grid. The magnification of the images should be exactly the same, for example, I scale all the images to 5% and then I put them in a clipping mask.
I've made a grid of 2 x 2 images and then reused this grid, to put a different set of images inside the clipping masks. The four images in the initial grid were scaled to 5%, but when I relink an image inside the clipping mask and choose a different one, the scaling changes - as seen in this screenshot to 4.708% for this particular image:
So my question is: is it possible to re-scale the image(s) to exactly 5%? I tried Object-Transform-Scale, but the initial value is always 100%, so I would have to calculate percentage for each image separately, like 5/4.708*100% for the one in the screenshot. Is it possible to use an absolute scaling percentage for image transformation?