Display Screen or Portion Thereof with Graphical User Interface

FIG. 1 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a first embodiment; and,

FIG. 2 is a front view of a display screen or portion thereof with graphical user interface showing my new design according to a second embodiment.

The outer perimeter illustrated by a pair of dashed broken lines in the drawings illustrates a display screen or portion thereof and forms no part of the claimed design. The remaining broken lines in the drawings illustrate portions of the graphical user interface that form no part of the claimed design.

The stipple shading in the figures illustrates a contrast of appearance and forms part of the claimed design.