The Budget Indicator shows the current state of revenue, expenses and net revenue for your event. It displays actuals in the large font numbers and budget targets under each one.
The color of the actual values vary from Green/Yellow/Red as they trend toward the budgeted values. Below half of budget, the actuals show Red, between half and 75%, the numbers show Yellow and above 75% of budget, the numbers show Green.
Clicking on the Budget Indicator jumps you over to the Budget section where you can dig into the details of your event budget financials.