You should just round the percentages to the nearest value of the appropriate precision, and let them sum to slightly more or less than 100% if that’s how the n

You should just round the percentages to the nearest value of the appropriate precision, and let them sum to slightly more or less than 100% if that’s how the numbers work out. If you want, add an asterisk and a “note, numbers do not sum to 100% because of rounding” at the bottom.