Perl 5 with -p, 1818 15 bytes
$_=int(~$_=1+--$_/100)+1100|0 (-3 whole bytes, thanks to @Dom Hastings.)
Or with -p -MPOSIX:
1515 13 bytes
$_=ceil($_$_=ceil$_/100) (-2 bytes, again thanks to @Dom Hastings.)