Display screen or portion thereof with animated graphical user interface

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

FIG. 2 is a second image thereof; and,

FIG. 3 is a third image thereof.

The outermost broken lines illustrating a display screen or a portion thereof form no part of the claimed design. The remaining broken lines illustrating portions of the animated graphical user interface form no part of the claimed design.

The appearance of the transitional image 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.