bigdir/app/views/users/_user_score.html.erb

<%= l(:label_user_grade)%>:
<%= link_to(format("%.2f" , user.user_score_attr.total_score).to_f, {:controller => 'users',
                                                                      :action => 'show_new_score',
                                                                      :remote => true,
                                                                      :id => user.id
}, :style => 'color :#E8770D;',:id => 'user_score') %>