%let gpath=C:\;
%let dpi=200;
ods html close;
ods listing style=HTMLBlue gpath="&gpath" image_dpi=&dpi;

/*--Create data--*/
data school;
  input Year Group $ Value;
  format Value percent5.1;
  datalines;
2010  School   .
2010  County   0.45
2010  State    0.42
2011  School   0.54
2011  County   0.46
2011  State    0.44
run;

/*--Default bar labels--*/
ods graphics / reset width=5in height=3in imagename="Bar_Label";
title 'Student Performance';
proc sgplot data=school noborder;
  vbarparm category=year response=value / group=group groupdisplay=cluster 
           displaybaseline=auto datalabel dataskin=pressed;
  xaxis display=(noticks noline nolabel);
  yaxis display=(noticks nolabel noline) grid;
  run;

/*--Create new columns--*/
data school2;
  set school;
  format Value2 percent5.1;
  length label $6;
  label=ifc(value, put(value, percent5.1), "N/A");
  Value2=ifn(value, value, 0);
run;

/*--Custom bar labels--*/
ods graphics / reset width=5in height=3in imagename="Custom_Bar_Labels";
title 'Student Performance';
proc sgplot data=school2 noborder;
  vbarparm category=year response=value2 / group=group groupdisplay=cluster 
           displaybaseline=auto datalabel=label nozerobars dataskin=pressed;
  xaxis display=(noticks noline nolabel);
  yaxis display=(noticks nolabel noline) grid;
  run;