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 an embodiment of my new design; and,

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

The outermost broken line in the figures depicts a boundary of a display screen or a portion thereof and forms no part of the claimed design. The remainder of the broken lines depict portions of the graphical user interface that form no part of the claimed design. The stippled portions within broken lines form no part of the claimed design.