Understanding Context Transition can be super frustrating for a new Power BI user. Definitions for it seem deceptively simple, but wrapping your head around how it actually works within a DAX expression can be painfully difficult. Fear not though my fellow DAXciples, in this video we’re going to walk you through the step by step mechanics of how the Context Transition behavior of CALCULATE() can take a sad broken formula and almost magically bring it to life. What’s more, we’re going to show you the whole thing in a clean visual way to make it both easier to understand and to remember.