particle physics - Parity of proton is 1?

I have found from Wikipedia that "a parity transformation is the flip in the sign of spatial coordinates".

Now when we operate parity operator, does that mean we are taking any physical entity at ${\bf x}$ to $-{\bf x}$. Or we are just reverting axes of the co-ordinate system?

However if we take parity transformation as active transformation then what does it mean that parity of proton is 1? Doesn't it anyway depend on the origin of the co-ordinate system?

Please elucidate the meaning of the parity. I get too much confused whenever I hear "parity"!