1, determine two quantities or values to compare. These values usually come from data tables, statistical reports or specific practical activities.
2. Compare these two values to make sure that one is the sum and the other is the part. For example, if you want to calculate the market share of a certain brand of mobile phones, then the sales of that brand can be regarded as a part, and the sales of the whole mobile phone market can be regarded as the total.
3. Divide this part by the total to get a fraction or decimal. Multiply the obtained fraction or decimal by 100, and then add the percent sign (%) to get the percentage. For example, if a brand sells 1000 mobile phones in the market and the total market sales volume is 5000, then the market share of the brand is: (1000/5000) x100% = 20%. So the market share of this brand of mobile phone is 20%.
The percentage calculation formula can be expressed in mathematical symbols as: x%= (partial/total) x 100%, where x represents the required percentage, partial represents the comparison value, and total represents the total or baseline value.
Application example of percentage:
1. Commercial field: In the commercial field, percentages are widely used in finance, market research, sales and marketing. For example, companies can use percentages to calculate indicators such as profit margin, market share and sales growth.
2. Science field: In science field, percentage is used to calculate experimental error, measurement error and probability. Scientists can use percentages to compare the results of the experimental group and the control group and evaluate the reliability of the experiment.
3. Education: In education, percentage is used to evaluate students' academic performance, attendance rate and completion rate. Teachers can use percentages to understand students' learning situation and performance, so as to better guide them.
4. Medical field: In the medical field, percentage is used to describe the incidence, prevalence and mortality of diseases. Doctors can use the percentage to understand the epidemic trend and influence of diseases, so as to better prevent and treat diseases.
5. Sociology: In sociology, percentages are used to describe demographic data, social phenomena and trends. Sociologists can use percentages to understand the structure and changes of society in order to better formulate policies and measures.