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 a first image in an animated sequence; FIG. 2 shows a second image in the animated sequence; FIG. 3 shows a third image in the animated sequence; and, FIG. 4 shows a fourth image in the animated sequence. The appearance of the animated sequences of images transitions sequentially between the images shown in FIGS. 1 - 4 . The process or period in which one image transitions to another forms no part of the claimed design. The outermost broken line illustrates a portion of a display screen while all other broken lines illustrate elements of a graphical user interface and/or representative imagery; all broken lines form no part of the claimed design. The dot-dash broken lines define the bounds of the claimed design and form no part thereof.