The X, Y or Z component of shrinkage result indicate the percentage of shrinkage that occurs in the part in the direction of the X, Y and Z axes, respectively.
A part which is oriented perpendicular to an axis will show zero shrinkage in that axis' direction.
Use this result to find out whether shrinkage is within part tolerances, and to see if differential shrinkage is likely to cause warpage.
Use the shrinkage result for a particular axis if a part has a critical dimension along that axis.
Look for regions in which there is high differential shrinkage. These regions are more likely to deform.