Build a query in Explore that will return a count of events that is filtered to all events and is starting at 7 days ago and ending now. Use the compare to option below starting and ending time that uses the offset of 7 days before. Use number view to visualize the result.
Once your query returns pay attention to the percentage count and time range that now populates beneath your count of events. When using a compare window you can choose to compare the results of your measure and starting/ending time to a different time window. This is especially helpful if you are looking for trends on a dashboard.
Note: The numbers and result does not need to be an exact match as the data changes over time. The query construction is what is most important. See images below.
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