Display screen or portion thereof with animated graphical user interface

FIG. 1 is a front view of a first image in a sequence for a display screen or portion thereof with animated graphical user interface;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof;

FIG. 4 is a front view of a fourth image thereof;

FIG. 5 is a front view of a fifth image thereof; and,

FIG. 6 is a front view of a sixth image thereof.

The appearance of the animated graphical user interface sequentially transitions between the images shown in FIGS. 1-6 . The process or period in which an image transitions to another forms no part of the claimed design. The broken lines showings of the display screen, electronic device, text, and other features are environmental only and form no part of the claimed design. The closely spaced broken line showings of concentric circles representing the animated navigation icon form no part of the claimed design.