diff --git a/build_database.py b/build_database.py
index 54af997..249f9a3 100644
--- a/build_database.py
+++ b/build_database.py
@@ -194,13 +194,16 @@ async def main_with_ctx(ctx, wanted_date):
 
             await ctx.db.commit()
 
+    log.info("going to process posts")
+
+    line_count_str = subprocess.check_output(
+        ["wc", "-l", output_compressed_paths["posts"]], stdout=subprocess.PIPE
+    )
+    line_count = int(line_count_str)
+
     with output_uncompressed_paths["posts"].open(
         mode="r", encoding="utf-8"
     ) as posts_csv_fd:
-        line_count = 0
-        for line in posts_csv_fd:
-            line_count += 1
-
         line_count -= 1  # remove header
 
         log.info("%d posts to import", line_count)
@@ -208,7 +211,7 @@ async def main_with_ctx(ctx, wanted_date):
         posts_reader = csv.DictReader(posts_csv_fd)
 
         processed_count = 0
-        processed_ratio = 0
+        processed_ratio = 0.0
 
         for row in posts_reader:
             created_at_str = row["created_at"]
@@ -270,9 +273,9 @@ async def main_with_ctx(ctx, wanted_date):
                 ),
             )
             processed_count += 1
-            new_processed_ratio = round((processed_count / line_count) * 100)
-            if new_processed_ratio != processed_ratio:
-                log.info("posts processed at %d%%", processed_ratio)
+            new_processed_ratio = round((processed_count / line_count) * 100, 2)
+            if str(new_processed_ratio) != str(processed_ratio):
+                log.info("posts processed at %.2f%%", processed_ratio)
                 processed_ratio = new_processed_ratio
 
         log.info("posts done")