title: Contraint Layout vs Percent Relative Layout
body: <p>So I have been using Contraint Layout since it seems to be much more powerful than Relative layout. However, I noticed that the support library has Percent Relative Layout Which seems to be very usable in many situation (specifying that the width of image view needs to be 30% of screen width).</p>
  
  <p>If you have layout where you need to place things in relation to each other and have the sizes to be based on percentage, is it bad approach to use PercentRelativeLayout?</p>
  
  <p>Thanks</p>