diff --git a/plot.py b/plot.py
index d298fde..ccc4da6 100644
--- a/plot.py
+++ b/plot.py
@@ -600,7 +600,7 @@ def plot_cumulative_two_vaccinations_percentage():
 
 	ax.legend(loc='upper left')
 	ax.xaxis_date()
-	ax.yaxis.set_major_formatter(mtick.PercentFormatter(1.0))
+	ax.yaxis.set_major_formatter(mtick.PercentFormatter(1.0, symbol=' %'))
 
 	ax.set_xlabel('Datum')
 	ax.set_ylabel('Kumulative Impfungen')