Which option would you select to find out what percentage a value is of the total?

Choosing the percentage of the grand total is the most appropriate option when you want to determine what percentage a specific value represents out of an entire dataset or total. This calculation provides the context needed to understand the relative significance of that value in relation to the whole.

When calculating this percentage, the formula you would use is:

[ \text{Percentage of Grand Total} = \left( \frac{\text{Value}}{\text{Grand Total}} \right) \times 100 ]

This means that if you're examining a particular data point and you want to know how it contributes to the overall dataset, this option will give you the correct answer. It allows analysts to understand how individual values compare to the cumulative total.

The other options focus on varying contexts. For example, calculating a percentage of row total or individual total pertains to specific subsets rather than the entire data set, and percentage of average total could lead to misleading interpretations as it averages values rather than providing a full picture of how a value stacks up against the overall dataset. Therefore, selecting the percentage of grand total accurately reflects the intended analysis.