Portion of a Display Panel with a Graphical User Interface

FIG. 1 is a front view of a first image in a sequence of a portion of a display panel with a graphical user interface; and,

FIG. 2 is a second image thereof.

The broken line showing of various regions of a graphical user interface in each of the views form no part of the claimed design. The broken line showing of the display screen is for illustrative purposes only and forms no part of the claimed design.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1 - 2 . The process or period in which one image transitions to another image forms no part of the claimed design.