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 our new design; and,

FIG. 2 is a second embodiment thereof.

The outermost dotdashed lines in the Figures show a display screen or portion thereof and form no part of the claimed design. The interior dotdashed line in the Figures show portions of the graphical user interface that form no part of the claimed design. The broken lines in the Figures show portions of the graphical user interface that form no part of the claimed design. The dark horizontal dashed lines illustrate an ornamental appearance of a portion of the graphical user interface and form part of the claimed design. The grayscale shading shows a contrast in appearance.