To access the statistics overview, select a production building or warehouse, then click the statistics overview button.
 The overview can also be opened by using the default keyboard shortcut Crtl + Q.

The new statistics overview feature allows you to get a detailed insight into the ongoings of your island. Are you producing enough potatoes? Is there a trend of canned food shortages?

You can find island-specific information or information for your whole trade empire by adjusting the options in the statistics overview. The overview will show you statistics for up to 2 hours of time played. 

You can find more information about the feature in this Anno Union article.

Feel free to get in touch if you have any further questions!