Display Screen or Portion Thereof with an Animated Graphical User Interface

FIG. 1 is a front view of a display screen or portion thereof with an animated graphical user interface, showing the first image of our new design;

FIG. 2 is a front view of the display screen or portion thereof with an animated graphical user interface of FIG. 1 , showing the second image thereof; and,

FIG. 3 is a front view of the display screen or portion thereof with an animated graphical user interface of FIG. 1 , showing the third image thereof.

The appearance of the animated graphical user interface sequentially transitions between the images shown in FIGS. 1 - 3 . The process or period in which one image transitions to another image forms no part of the claimed design.

The broken lines showing an electronic device are included for the purpose of illustrating environmental structure that forms no part of the claimed design. The remaining broken lines illustrating portions of the display screen and portions of the animated graphical user interface are included for the purpose of illustrating portions of the article of manufacture that form no part of the claimed design.