How to see distance between components by ratio?

Hi, i am currently making a responsive app for my company and size we want to make the layout adjustable to every size of screens we dont give components certain x and y positions like (100,250). Instead we code the positions in percentage form like “Button will be at position[%30 * (width of screen), %60 *(height of screen)]”. To do this when I press “alt” key , I need to see the distance in % form not in pixels. Can you add a feature for this?