I just could not figure out how does the "Scale relative to target page" option in Acrobat calculate the size of the watermark based on the size of the page and the percentage of the option. Could someone enlighten me a bit. Best with samples. Let's say the original watermark image size 100x100, the first page's size is 1000x2000, the second page is 4000x6000, and the percentage of the "Scale relative to target page" is set to 80%. Then how does Acrobat calculate the watermark size on each page?