I am new to Google Analytics, and I am using Analytics real time API to get real time data. Now I am trying to get "Top Active Page" section which appears on the "Overview" link in "Real time" menu in "analytic.google.com" site. In that "Top Active Page" section, it shows how many active users are on each page. Which metric and dimension do I use to get active user for each page? The percentage which appears. I can manage as it shows from total active users, and how many percentage of users are on which page.