In Power BI, when dividing 2 number it is advised to use the DIVIDE() DAX function instead of the divide operator (/).
Syntax: DIVIDE(<numerator>, <denominator> [,<alternateresult>])
Example: % of Total Sales Amount = DIVIDE([Sales Amount], [Total Sales Amount],0.0)
Source: https://learn.microsoft.com/en-us/dax/best-practices/dax-divide-function-operator
