Jamison Company uses the total cost method of applying the cost$-$plus approach to product pricing. Jamison produces and sells Product X at a total cost of $$25$ per unit, of which $$15$ is product cost and $$10$ is selling and administrative expenses. In addition, the total cost of $$25$ is made up of $$14$ variable cost and $$11$ fixed cost. The desired profit is $$5$ per unit.

Determine the markup percentage on total cost.