Resize Object By Specific Percentage. One idea I had while writing this was to tag each of the fractions with the object style of fraction and then use a script to sniff out all of these and change the size by 85. Holding down Shift Alt Windows or Shift Option Mac while clicking and dragging a handle will resize an object proportionally from its center if you click a corner handle or will adjust opposite sides equally if you are using a side handle.
See Resize layout items and Position layout items. You can resize layout items images overlay text and multiple video sources using the percentpixel adjustment boxes in a layout using the custom layout editor. To resize both the frame and content use the Scale X Percentage and Scale Y Percentage fields not the W and H fields.
Font size colour weight etc.
Insert the info of the type you want to change be as specific as possible. If you want the width and height to maintain their proportion check the Scale Proportionally box. Type in the desired size. Your resulting image will be 500px wide and 300px tall.
