anchor.diff:  					change = -1 if previous[:revenue] != 0 && week[:revenue] == 0
   				end
   			%>
  -				<tr>
  +				<tr class='<%= is_last ? 'last' : '' %>'>
   					<td><%= week[:date].strftime('%d %b %Y') %></td>
   					<td class='numeric'><%= (week[:revenue] || 0).to_usd %></td>
  -					<td class='numeric <%= change >= 0 ? 'up' : 'down' %>'><%= change.to_pct %></td>
  +					<td class='numeric <%= change >= 0 ? 'up' : 'down' %>'><%= is_last ? '-' : change.to_pct %></td>
   				</tr>
   			<% end %>
   		</tbody>
  
positive.code: 	color: red;
  }
  
  .section {
  	margin-bottom: 8px;
  }
  
negative.code: 			<% 
  				next if i == 0
  				previous = weekly_data[i-1]
  				is_last = i == weekly_data.length - 1
  				change = 0
  
  				# the first record is invalid because we don't have a full week always, and this means
  