Compute the Rank as a Percentage

Given a list of values (e.g., scores) and one or more targets, compute the rank expressed as a percentage of the population—i.e., the proportion of items below (or below-or-equal-to, per tie rules) the target multiplied by 100. The challenge focuses on correctly counting or sorting to determine positions, handling ties and edge cases, and returning the result with the required precision/format.