Let's say the skater does a triple Lutz (base value 6.0). The caller calls it underrotated. Now the base value is the same as for a double Lutz (1.9).
Lets say that three of the scoring judges thought the same as the caller, that it was underrotaed. But the other two judges thought it was not underrotated. If the jump was Ok but not spectacular otherwise, the three judges might give -1 or worse GOE, and the other two judges might give 0 GOE. So works out like this:
Base value = 1.9. GOE = (-0.3 + -0.3 + -0.3 + 0.0 + 0.0) / 5 = -0.18. Total score for the element = 1.72.
Under the old rules, all five judges would have to give -1 GOE whether they agreed with the underrotation call or not. The skater would get 1.9 - 0.30 = 1.60.
So, not much of a difference for a solo triple jump.
The deduction is off the base value. The jump goes into the record as 3Lz< with a base value of 1.9 instead of 6.0. There is no further mandatory deduction.What happens to the UR call after that?
I think the right way to say it is that if the caller gives an "e" call, then the judges must give the element an overall negative GOE. Each judge will give either -1, -2, or -3 depending on how bad the edge was and how good or bad other features of the jump were.MHO, point scoring can be whimsical. A wrong edge take off gets an automatic -1 in addition to what the judges think,...
If the caller gives a "!" then the judges can do as they please, but they are supposed to factor in the questionable edge, along with other considerations, to come up with the overall GOE mark for that element.
(I hope I got that right. )