The ornamental design for a displayscreen or portion thereof with a graphicaluserinterface, substantially as shown and described in the FIGURE.
A portion of the disclosure of this patent document contains material to which a claim for copyright is made. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but reserves all other copyright rights whatsoever.
The FIGURE is a front view of a display screen or portion thereof with graphical user interface.
The outermost broken-line perimeter illustrates a display screen or portion thereof and forms no part of the claimed design. The remaining broken lines, including the skeleton figure, illustrate portions of a graphical user interface and form no part of the claimed design.