declare @a decimal(15,4)
set @a=.1234
select cast(cast(@a*100 as varchar)as varchar)+'%'
select cast(cast(str(@a*100,5,2) as varchar)as varchar)+'%'
-------------------------------
12.3400%
(所影响的行数为 1 行)
-------------------------------
12.34%
(所影响的行数为 1 行)