This can be explained by this nerst equation. So, the calculated of equilibrium potential is done by in this case as minus 61 times the log of concentration inside versus by concentration outside. So the concentration outside is.. pause… higher then you get the less value here. Right, and as a result, you have a negative, less negative value here. And you have a less negative value, and usually, one point is that membrane potential is very much maintained by the equilibrium potential of potassium right. SO, if that equilibrium potential potassium is less negative, then the resting membrane potential would be less negative. And that would be more closer to the threshold potential.