Electric Potential

1. The problem statement, all variables and given/known data

When is electric potential negative and when is it positive?

2. Relevant equations

V=Es

3. The attempt at a solution

I first thought that when you are moving in the same direction as the electric field the electric potential will be a positive value.
However I across a problem in which you are moving a charge in the positive x direction the electric field is also in the positive x direction, and yet the answer is a negative value.

Can someone please help and explain this to me in easy terms? I searched for an answer, but I am still confused.

Thank you!

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