I am specifically looking for a description of subtracting a Vector from a given Point, like the one I have found here for addition of a Point and a Vector.
Point+Vector Addition Definition
Q=P+ $\vec v$=($p_i$+$v_i$)
The resulting point Q is considered to be the displacement, or “translation”, of the point P in the direction of and by the magnitude of the vector v=Q-P.
Here I found a good example which gives a fair idea about whats happening behind addition of vector and a point.
Couldnt find the same for subtraction.
Notice that subtracting a vector $\vec v$ from something is the same as adding $-\vec v$ to it. And $-\vec v$ is $\vec v$ pointing in the exact opposite direction.
Therefore if you know how to add vectors, you know how to subtract them as well: just take $-\vec v$ and add it, the way you would add any other vector.