我有两个表：
表格1
ID totalamount
--- -----------
100 1000
101 500
表 2
ID Individualamount
--- ----------------
100 500
100 300
100 100
101 200
101 300
我需要一个结果显示
ID TotalAmount sum(Individualamount) difference (TA-IA) % of diff
--- ----------- --------------------- ------------------ ---------
100 1000 900 100 10
101 500 500 0 0