If you have data impacted by an event, you can use calculated metrics to derive estimated values for the duration of the event. For example, if you had an event that caused a 25% drop in data, you can use that as a multiplier in a calculated metric.
These steps work best when you understand the impact of an event, both from a segmentation and date comparison perspective. Make sure to follow Compare dates impacted by an event to previous ranges and Exclude specific dates in analysis before following this page.
To create an estimated calculated metric for the affected time period: