What is the difference between year-on-year reduction and year-on-year reduction?

The functions and concepts of year-on-year reduction and year-on-year reduction are different.

Year-on-year decrease: refers to the comparison between adjacent times. Less means less, less means less, and more is used to reduce the amount of things themselves. (For example, a pharmaceutical company produced 30,000 bottles of drugs this year, a year-on-year decrease of 1 10,000 bottles),

Year-on-year decline: generally refers to the percentage of decline. (For example, a pharmaceutical company produced 30,000 bottles of drugs this year, down 10% year-on-year)

Year-on-year: comparison of historical data in the same period generally refers to the comparison between the first month of this year and the first month of last year. The year-on-year development speed mainly excludes the influence of seasons, weather and some special circumstances, and illustrates the relative development speed by comparing the development level of this period with that of the same period last year. For example, May this year is more than May last year, and June this year is more than June last year. Its calculation formula is: year-on-year development speed = development level of a month this year/development level of a month in the same period last year ×100%; Year-on-year growth rate = (development level in a month this year-level in a month last year)/development level last year × 100%. In real life and work, people often use this as an indicator, such as the development speed of a year, a season and a month compared with the same period of last year, which is the year-on-year development speed. The development speed can be divided into year-on-year development speed, ring-on-ring development speed and fixed-base development speed because of the different base periods adopted. The year-on-year development rate is equal to the current development level divided by the development level of the same period last year multiplied by half a hundred, generally expressed as a percentage or multiple. Percentages are generally used for small values, such as 123%, 156%, 134% and so on. Multiplication is generally used when the value is large, such as 1.23 times, 1.56 times, 1.34 times, etc. For example, in May last year, a share development company earned 500,000 yuan, and in May this year, it earned 300,000 yuan, so it can be said that this month's income dropped by 20% year-on-year.