Determining eighty-five percent of fifteen involves a straightforward calculation. It represents a proportional reduction of the quantity fifteen. The result is derived by multiplying fifteen by the decimal equivalent of eighty-five percent, which is 0.85. This calculation yields the value 12.75.
The ability to compute percentages is a fundamental skill applicable across various domains. It is essential in finance for calculating discounts, interest rates, and profit margins. In statistics, it facilitates the representation and comparison of data. Historically, percentage calculations have been integral to trade, taxation, and resource management, providing a standardized method for expressing proportions and relative values.