title: How to make a barchart in seaborn with connecting lines indicating percentage change from a time period to the next?
body: <p>The only references I can find online is placing a percentage on top of the barchart <a href="https://stackoverflow.com/questions/31749448/how-to-add-percentages-on-top-of-bars-in-seaborn">here</a>, but none with connecting lines and placing some text between bars at the center of the connecting line.</p>
  <p>Currently my chart looks like this:</p>
  <p><a href="https://i.stack.imgur.com/wXv58.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wXv58.png" alt="enter image description here" /></a></p>
  <pre><code>df_revenue = compiled_data[compiled_data['Fee Name'] == &quot;Item Price Credit&quot;]
  df_revenue = df_revenue.groupby(['Year']).sum()
  df_revenue = df_revenue.reset_index()
  
  sns.set_theme(font_scale=1.5, style=&quot;whitegrid&quot;)
  g = sns.catplot(data=df_revenue, x='Year', y='Amount', kind='bar', height=6, aspect=12/6)
  g.set(title=&quot;Yearly Revenues&quot;, xlabel = 'Year', ylabel='Amount')
  sns.despine(left=True)
  
  for ax in g.axes[:,0]:
      ax.yaxis.set_major_formatter(ticker.StrMethodFormatter('{x:,.0f}'))
  plt.show()
  </code></pre>
  <p>But I am hoping it to look like this and I am not sure what to work with:</p>
  <p><a href="https://i.stack.imgur.com/BHOVu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BHOVu.png" alt="enter image description here" /></a></p>