百分數增減

[1 x (1+20%)] x (1-5%) = 1.14

1*1.2*0.95=1.14
1.14=114%
so increase14%

[1 x (1+20%)] x (1-5%) = 1.14

2006-12-09 04:55:18 補充：
我先答但答案完全一模一樣而反而不是最佳回答????

because -1%+20%-5%=14%