英语中的百分数怎么读?

百分数由percent表示,百分号％读作 percent,应用时常与by连用。
0．68％→zero point six eight percent
6％→six percent
369％→three hundred and sixty nine percent
The output of steel went up by 20 percent．钢产量增长20％。
The price of cotton was reduced by 20 percent．棉花的价格下降了20％。