Game Report Key Moments Openings Bar Charts?

In the iOS app, anyone have any idea what the bar charts below the key moments tab are supposed to mean? They seem to start with a suggested move for the specific key moment being analyzed. But then it has a number next to a bar chart with three colors and percentages that I don't understand. 

When I click any of the bar charts it opens a screen called openings that has the same type of move analysis with the mystery number and bar charts with percentages, but still no explanation.

Help!

@dirkholeman Is this standard chess notation? Or something proprietary to chess.com? Is there a proper name for this analysis feature? Trying to learn how to use it but I can't find any documentation on chess.com or off. Also which database is this accessing? Thanks for your response.