diff --git a/examples/cumulativeLineChart.html b/examples/cumulativeLineChart.html
index 553309b..1aad6cd 100644
--- a/examples/cumulativeLineChart.html
+++ b/examples/cumulativeLineChart.html
@@ -61,7 +61,7 @@ nv.addGraph(function() {
         });
 
   chart.yAxis
-      .tickFormat(d3.format(',.2p'));
+      .tickFormat(d3.format(',.1%'));
 
   d3.select('#chart1 svg')
       .datum(cumulativeTestData())