Configuration centered at the origin

[onako]

I have two configurations (set of points, each with its x and y coordinate) that should be compared.
In order to do this, I should perform the operation so that both configurations are centered at the origin.
I understand that the operations are to be performed on x and y axis, but I'm not sure how to do this.
Any suggestions are welcome.

 

[Rajini]

if you have x and y data why can't you plot and see ?

 

[onako]

I should compare the similarity of these two configurations with the original. For some options, the plot will not help you. Therefore, another way requiring centering at the origin is recommended. But, I'm not sure how to achieve this.