doubt in sort cmd

wat does sort -t "%" +2 -r filename do... tried this cmd many times...but not gettin any output
...also wy does this happen
[@oracleclient ~]$ cat sort12
98
101
45
56
34
67
66
77
1
2
4
45

[@oracleclient ~]$ sort -r sort12
98
77
67
66
56
45
45
4
34
2
101
1

[@oracleclient ~]$ cat>sort1
1
2
3
6
5
4
9
8
7
[@oracleclient ~]$ sort -r sort1
9
8
7
6
5
4
3
2
1

use sort -nr filename

n stands for numeric sort

t is used to specify delimiter
[335802@oracleclient ~]$ cat sort3
123:345
456:678
321:654
789:000
000:678
267:678
[335802@oracleclient ~]$ sort -t ":" sort3
000:678
123:345
267:678
321:654
456:678
789:000
[335802@oracleclient ~]$ sort -t ":" -r sort3
789:000
456:678
321:654
267:678
123:345
000:678

thanks akalya...
wats tht +2 al tht
wy do v use tht

dnt use quotes

use grep aj* filename

use grep am. filename

@lalitha
i donno abt +2.....
is there an option like tat???
i din find it in man sort!!!!