We have the "before" and "after" points and we have to find the transformation.
In the x-axis it seems that the transformation is a translation of -6 units.
In the y-axis it will also be a translation, and in this case, it is of +3 units.
Then the transformation is a translation of (-6,3).
Mapping notation:

Transformation notation: T[-6,3](x,y)
Each point (x,y) will be translated 6 units to the left and 3 units to the top.
For example, P=(1,-1) will be translated 6 units to the left, so the coordinate in x of the translated P is x=1-6=-5, and 3 units to the top, so the y-coordinate of the translated P is y=-1+3=2.