I wanted to inset this code with the output to display to my chart. I asking for help

[Jerome Exum]

MarginPercentage = (MT4_margin / MT4_equity * 100)

[William Roeder]

Help you with what? You haven't stated a problem, you stated a want. Show us your attempt (using the CODE button) and state the nature of your problem.
          No free help 2017.04.21

Or pay someone. Top of every page is the link Freelance.
          Hiring to write script - General - MQL5 programming forum 2018.05.12