Format of percentage values in heatmaps not clean. When weekday or month heatmaps z_value is percentage in function, the hover text shows long float.

1. In the weekday_complete and month_complete functions in chart.py module change the formatting of the z value hovertext so that it displays 13% instead of 12.999555 , for example.
2. consider better function names for these heatmap generators displaying count and percentage of work orders completed in a given time frame (day or month)

Start in chart.py with the weekday_complete and month_complete heatmap generators, then inspect how their z values are formatted in the hover text. Confirm that percentage values display rounded values such as 13% rather than long floats. Also review whether clearer names are needed for the count and percentage heatmap functions.

Written by the indexing model from the issue text.