A $3\mathrm{.}6C$ charge is moved from a position where its electric potential energy is $7\mathrm{.}2$ mJ to a position where its potential energy is $1\mathrm{.}8$ mJ $.$ What is the change in potential from the initial position to the final position?

Multiple Choice

$-1500$ V

$2000$ V

$1500$ V

$3500$ V