Calculation formula of growth rate of main business

Growth rate of main business income = (main business income in the current period-main business income in the previous period)/main business income in the previous period * 100% The growth rate of main business income can be used to measure the product life cycle of a company and judge its development stage. Generally speaking, if the growth rate of main business income exceeds 10%, it means that the company's products are in the growth stage and will continue to maintain a good growth momentum, and it has not yet faced the risk of product upgrading, and it belongs to a growth company. If the income growth rate of the main business is between 5%- 10%, it means that the company's products have entered a stable period and are about to enter a recession, so it is necessary to start developing new products. If the ratio is less than 5%, it means that the company's products have entered a recession, it is difficult to maintain market share, and the profit of its main business has begun to decline. If new products are not developed, they will enter decline. The growth rate of main business should only be a concept, and the formula is not clear for the time being.