In ArcMap, North Arrow Properties, with the alignment set to True North, I used to be able to select the "Calculated Angle" value . This was handy for being able to apply a map rotation by copying and pasting this number into the data frame properties. In Pro, the Calculated Angle is not selectable, so I have to type the number manually. The number of significant digits (~11) is a lot greater in Pro, so the extra work is significant!