seaborn frequency plot by percentage code example
Example: percentage plot of categorical variable in python woth hue
sns.barplot(x='group', y='Values', data=df, estimator=lambda x: sum(x==0)*100.0/len(x))
sns.barplot(x='group', y='Values', data=df, estimator=lambda x: sum(x==0)*100.0/len(x))