To view the Price Evolution graph, click on the graph button in the menu on the top right corner.
In this page, you will see a graph showing the market demand with bars and the rates with lines.
As a default, you will see two lines: your rates in blue and the median rate in orange.
By hovering with the mouse over the graph, you can see the details for a specific date.
You can personalize the graph by clicking on the Legend drop-down menu, which will let you choose what to show on the graph, like adding the lines representing properties in your competitive set.
As in the calendar view, you can change the period and the rate type shown in the graph by using the Date and Room Rate & Type drop-down menus.