求 20% 的值 $60
20% 的百分之几 20/100 mutiplied by $60:
$12 是 $60
$12 的百分之几 divided by $60 and multiplied by 100%:
$12 的百分之几 20% 的值 what
$12 的百分之几 divided by 20%:
求 the percentage change from $40 到 $50
The difference between $50 and $40 的百分之几 divided by $40 and multiplied by 100%:
