diff --git a/config/routes.rb b/config/routes.rb
index d24929c0..4305789c 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -282,6 +282,7 @@ Rails.application.routes.draw do
         get :hovercard
         put :update_image
         get :get_image
+        post :contribution_perc # author: zxh, calculate the percentage of contributions for user in project
       end
       collection do
         post :following