"Percentage" And "Percentage"

　　 percentage It's a denominator of one hundred. Fraction In mathematics, "%" is used to express "how much percent" is usually written in the article. The percentage is different from the multiple. It can not only indicate the increase of quantity, but also indicate the reduction of quantity. When using percentages, we must also pay attention to the accuracy of concepts. For example, "20% increase over the past", that is, 100 in the past, is now "120"; "20% lower than in the past", that is, in the past 100, now is "80"; "reduced to the original 20%", that is, originally 100, now is "20". When using percentages, we should also note that some can only reach 100% at most, such as product qualification rate, seed germination rate, and so on. Some percentages can only be less than 100%, such as grain yield, and some percentages can exceed 100%, such as products. yield The completion of the plan.

The usage of "occupy", "exceed", "do" or "increase" means "percentage of the plan" means the percentage of the completion of the plan; the percentage of the "super plan" should be deducted from the original cardinal number (-100%); "the percentage of last year" is equal to or equal to the percent of the year; "the increase of a few percentage points from last year" should deduct the original base number (-100%).

Percentage point refers to the change of relative index (such as speed, index, composition, etc.) expressed by percentage in different periods. For example, the proportion of primary industry in China's gross domestic product decreased from 20.8% in 1992 to 18.2% in 1993.

From the above information, we can say that the proportion of the primary industry in GDP is 3.6 percentage points lower than that in 1992 (18.2-21.8=-3.6) in 1993, but it can not be said to drop by 3.6%.