First, pure percentage is just a mathematical formula, which has no practical significance. For example, 100 * (1+10%) or100/(1-kloc-0/0%), their final results are all greater than100, but

Second, what is the profit rate? Know what profit is first. Profit is revenue-cost. The profit in your question is 6 16 and the cost is 450, so the profit is 6 16-450= 166. It means 166 profit. Profit rate equals profit divided by cost. Then the profit margin is 166/450, which is about 37%. The other percentage you put forward is only a pure mathematical formula and has no practical significance. You don't have to dwell on it.