数据透视表 - / +聚合

Question

我遇到以下问题时遇到问题。我需要找到入学年份之间增加或减少的百分比。由于某种原因，我得到多个订单项，我的输出不正确。脚本运行正常但产生的结果不正确

脚本：

WITH    cte
          AS ( SELECT   *
               FROM     ( SELECT    DISTINCT
                                    dt.YEAR ,
                                    db.business_code ,
                                    db.business_name ,
                                    dt.time_key ,
                                    fes.total_enrollment
                          FROM     fact
                                    AS fes
                                    LEFT OUTER JOIN building
                                    AS db ON fes.building_key = db.building_key
                                    LEFT OUTER JOIN mart.time
                                    AS dt ON fes.time_key = dt.time_key

                        ) AS source PIVOT
    ( sum(total_enrollment) FOR [year] IN ( [2012], [2011], [2010], [2009],
                                            [2008] ) ) as pvt
             )
    SELECT  company_code ,
            company_name ,
            [2012] ,
            ( CASE WHEN [2011] <> 0
                   THEN CONVERT(DECIMAL(18, 2), ( [2012] - [2011] )
                        / CONVERT(DECIMAL(18, 2), ( [2011] ))) * 100
              END ) AS '% Degree -/+' ,

            [2011] ,
            ( CASE WHEN [2010] <> 0
                   THEN CONVERT(DECIMAL(18, 2), ( [2011] - [2010] )
                        / CONVERT(DECIMAL(18, 2), ( [2010] ))) * 100
              END ) AS '% Degree -/+' ,
            [2010] ,
            ( CASE WHEN [2009] <> 0
                   THEN CONVERT(DECIMAL(18, 2), ( [2010] - [2009] )
                        / CONVERT(DECIMAL(18, 2), ( [2009] ))) * 100
              END ) AS '% Degree -/+' ,
            [2009] ,
            ( CASE WHEN [2008] <> 0
                   THEN CONVERT(DECIMAL(18, 2), ( [2009] - [2008] )
                        / CONVERT(DECIMAL(18, 2), ( [2008] ))) * 100

              END 
              ) AS '% Degree -/+'
    FROM    cte
    ORDER BY company_name

继承我的SQL输出：

这是我想要的输出：

感谢您的帮助......