CREATE FUNCTION dbo.ReverseValues
@ValueList varchar(8000),
@Delimiter char(1)
RETURNS varchar(8000)
AS
BEGIN

DECLARE @String varchar(100),@Final varchar(8000)

WHILE @ValueList IS NOT NULL
BEGIN
SELECT @String=CASE WHEN CHARINDEX(@Delimiter,@ValueList)>0
                    THEN LEFT(@ValueList,CHARINDEX(@Delimiter,@ValueList)-1)
                    ELSE @ValueList
                    END,
      @ValueList= CASE WHEN CHARINDEX(@Delimiter,@ValueList)>0
                    THEN SUBSTRING(@ValueList,CHARINDEX(@Delimiter,@ValueList)+1,LEN(@ValueList))
                    ELSE NULL
                    END
SET @Final=@String+ COALESCE('/'+ @Final,'')
END
RETURN @Final
END

UPDATE YourTable
SET yourCol=dbo.ReverseValues(YourCol,'/')