How can a fluctuating percentage be expressed within a numerical range?

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One way to express a fluctuating percentage within a numerical range is to use the minimum and maximum values of the percentage over a period of time. For example, if a percentage fluctuates between 20% and 30%, the numerical range could be expressed as "between 0.2 and 0.3" or "between 20 and 30 percent." Another way could be to use the average percentage over the period of time, along with a range that reflects the degree of fluctuation. For example, "the average percentage was 25% with a range of +/- 5%." This would indicate that the percentage fluctuated between 20% and 30%.