Percentage Datatype in Volume 1

Imported from previous forum

[ original email was from Jim Northey - jnorthey@lasalletech.com ]
Add clarification that percentage can be a negative value (originated via NASD feedback).

[ original email was from Kevin Houstoun - kevin.houstoun@ssmb.com ]
This issue has been assigned ID PC20030411_12 and will be discussed by the Global Technical Committee

> Add clarification that percentage can be a negative value (originated via NASD feedback).
>