As a demography expert, I can provide you with a detailed answer on how to calculate 1% of the world's population.

Firstly, it is important to establish the current global population. According to recent demographic studies and estimates, the world's population has surpassed the 7 billion mark. However, this number is not static and is constantly changing due to births, deaths, and migration. Therefore, the exact number of people in the world at any given moment is subject to fluctuation.

To calculate 1% of the world's population, you would take the total number of people and divide it by 100. For example, if we use the 7 billion figure as a reference point:

\[ \text{1% of world population} = \frac{7 \text{ billion}}{100} = 70 \text{ million} \]

So, 1% of the world's population would be approximately 70 million people.

It is also worth noting that the distribution of the world's population is not uniform. Some countries have larger populations than others, and population density can vary greatly from one region to another. For instance, countries like China and India have populations that are over a billion, while there are many smaller nations with populations in the hundreds of thousands or even less.

Furthermore, demographic trends can influence the growth or decline of a population. Factors such as fertility rates, life expectancy, and migration patterns play a significant role in shaping the population of a country or region.

In addition to the total number of people, there are other demographic indicators that are often considered when studying populations. These include the age structure of the population, the gender balance, and the rate of urbanization. Understanding these aspects can provide a more comprehensive picture of a population and its dynamics.

Lastly, it is crucial to recognize that population figures are estimates and projections based on current data and trends. Demographers use various methods to predict future population sizes, but these predictions are subject to change as new data becomes available and societal conditions evolve.

Now, let's proceed to the translation of the answer into Chinese.

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