Revenge meter -> Ultra damage

How exactly does the fullness of the revenge meter determine ultra damage? Obviously you can’t use your ultra until it’s half full, but what’s the damage difference between half full and completely full? Is it just two values or is there a gradient?

As soon as the Revenge meter becomes active the Ultra combo will deal a set amount of damage with a 1.00 multipyer. When the meter is full the multiplyer changes to about 1.50 The multiplyer will vary given where the meter is between these two points. This is not taking into account damage scaling if comboing into an ultra.