Change in kinetic energy?

A particle carrying an electric charge of -10 uC travels through a region in space where the electric potential is given by V(x,y) = 12.5x-7.5y kV. What is the change ni the particle's kinetic energy as it moves on an arc of an ellipse from r1=22x^ + 12y^ cm to r2= -1-x^ + 25y^ cm? ume the electric force is the only force doing work on the moving particle.