The ornamental design for a displayscreen with transitionalgraphical user interface, as shown and described.
FIG. 1 is the first image in a sequence for a display screen with transitional graphical user interface showing our new design; and,
FIG. 2 is a the second image thereof.
The appearance of the transitional graphical user interface sequentially transitions between FIGS. 1 and 2. The process or period in which one image transitions to another forms no part of the claimed design. The broken line showing of the display screen forms no part of the claimed design.