i assume in Config -> General config the I/J Mode is set to absolute.
so your starting coordinate in X is 44,375
by using
G2 I-44,375
you are telling the System, that the Center X coordinate of your circle is absulute -44,375
so your start is at +44,375 and the Center is at -44,375 makes a radius of 88,75 and a
diamater of 177,5. exactly what your ruler Shows.
about the Min/Max:
Max X := X-Start = 44,375
Min X:= X-Start - Diameter = 44.775 - 177,5 = -133,125
Y is nowhere specified, so it takes the startvalue = 0
Max Y := 0 + Radius = +88,75
Min Y := 0 - Radius = -88,75
so the entire Problem is the Absolute I/J Mode insteed of incremental.
with incremental Mode we will have the following situation
so your starting coordinate in X is 44,375
by using
G2 I-44,375
you are telling the System, that the Center X coordinate of your circle is incremental -44,375 witch
makes the Center going to absolute X = 0
so your start is at +44,375 and the Center is at 0 makes a radius of 44,375 and a
diamater of 88,75.
about the Min/Max:
Max X := 44,375
Min X:= -44.375
Y is nowhere specified, so it takes the startvalue = 0
Max Y := 0 + Radius = +44,375
Min Y := 0 - Radius = -44,375