Percentages

Three weeks of numeric issues. Formatting percentages is straightforward #0.00% - except that there is a "built-in" * 100 due to the percentage symbol. There doesn't seem to be any way round this - except to store the data as 0.456 for 45.6%. Of course, there is a big downside to this - format is straightforward, but parse needs to / 100 to ensure data is stored correctly - and on a datagrid that means writing a custom column style to do this.