Year-on-year decline refers to the change in the current period data compared to the previous period data in the same time period. By calculating the year-over-year decline percentage, you can get a more intuitive picture of the extent of the data change. This article will give you a detailed introduction to how to calculate the year-on-year decline percentage.
1. Understand the basic concept of year-on-year decline
The year-over-year decline percentage refers to the degree of change in the current period compared to the previous period data over the same time period. For example, if a company's sales this year are 10 million yuan and last year's sales are 12 million yuan, then the year-on-year decline percentage is the degree of change in current sales relative to last year's sales.
2. Steps to calculate the year-on-year decline percentage
The steps to calculate the year-on-year decline percentage are as follows:
1.Determine the current and previous data. The current period refers to the data in the current time period, and the previous period data refers to the data of the previous time period that is the same as the current time period.
2.Calculate the difference between the current period and the previous period. The difference is equal to the current period minus the previous period. For example, if the sales in the current period are 10 million yuan and the sales in the previous period are 12 million yuan, the difference is 10 million yuan - 12 million yuan = -2 million yuan.
3.Calculate the difference as a percentage of the previous period's data. The percentage is equal to the difference divided by the previous period data and then multiplied by 100%. For example, if the difference is -2 million yuan, the sales volume of the previous period is 12 million yuan, and the percentage is (-2 million yuan 12 million yuan) 100% = -1667%。
4.Based on the calculation results, the data changes are judged. If the year-on-year decline percentage is positive, it means that the data in the current period is higher than the data in the previous periodIf the year-on-year decline percentage is negative, it means that the current period is lower than the previous period.
3. Precautions
1.When calculating the year-on-year decline percentage, you need to note that the time period of the current period and the data of the previous period must be the same and the data type must be the same.
2.During the calculation, the difference may be negative, indicating that the data for the current period is lower than the data for the previous period. In this case, the percentage drop is also negative.
3.The year-over-year decline percentage can reflect the degree of change in the data over the same time period, but it cannot fully reflect the long-term trend of the data. When analyzing the data, a comprehensive judgment should be made in combination with other factors.
The year-over-year decline percentage can help us more visualize how much the data has changed over the same time period. Hopefully, this article will help you better understand how the year-over-year percentage is calculated, so that you can more accurately analyze the changes in your data.