Data Type:	Numeric
Data Length:	unknown

A domain which includes a percentage sign.

A percentage defined as a proportion or rate per hundred parts.

References:
The e-GIF version approved for use in NHS England is:
Government Data Standards Catalogue: (GDSC), Version 1.1, Agreed 1 September 2002.
GDSC: http://www.cabinetoffice.gov.uk/govtalk/schemasstandards/e-gif/datastandards.aspx.