By Period Tab: Handle Null Values for Percent of Total Budget Column
As a user, I want to know the difference when an agency has not submitted anything and when an agency made an empty submission.
% of Total Budget Column in the Statistics by Submission Period tab:
1. When an agency has submitted File A data, but the value was 0, show 0.00%
2. When an agency has NOT submitted File A Data, show --
For A/C 1 & 2:
Front End: Model stores raw data from API here. Helper used in model should handle null value without any changes
The `calculatePercentage` function will default to `--` if the numerator or denominator is not a number.