You can put this solution on YOUR website! Proportion... but you may be able to relate 2% as a fraction of 8%. The question is about 2%, which s of 8%. You already know 8% is some 6 ounces. What is then, of 6 ounces?
More formally, given 6 ounces is 8% of a whole quantity, W, then , and so dividing both sides by 0.08, find that ounces.