Nether Portals in Overworld linking to same spot in Nether

I have a Nether Portal situated at (-165, 249) which takes me to point (-21,44) in the Nether.

I made a new Nether Portal situated at (296,248). Upon entering the portal it takes me to the same location of (-21,44) in the Nether. If I re-enter the same portal a second later it takes me back to my original location of (-165,249).