diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2c0af7d..3a05e681 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [8.0.1] - unreleased
+
+### Changed
+
+- Change the render prefix to correspond to the decimal units in progress
+
 ## [8.0.0] - 2020-10-03
 
 ### Added
diff --git a/rich/progress.py b/rich/progress.py
index 947f482c..95768598 100644
--- a/rich/progress.py
+++ b/rich/progress.py
@@ -299,7 +299,9 @@ class DownloadColumn(ProgressColumn):
         completed = int(task.completed)
         total = int(task.total)
         unit, suffix = filesize.pick_unit_and_suffix(
-            total, ["bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"], 1024
+            total,
+            ["bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"],
+            1000,
         )
         completed_ratio = completed / unit
         total_ratio = total / unit
diff --git a/tests/test_progress.py b/tests/test_progress.py
index 34a8e8c1..e94d75ed 100644
--- a/tests/test_progress.py
+++ b/tests/test_progress.py
@@ -79,6 +79,15 @@ def test_time_remaining_column():
     assert str(text) == "0:01:00"
 
 
+def test_download_progress_uses_decimal_units() -> None:
+
+    column = DownloadColumn()
+    test_task = Task(1, "test", 1000, 500, _get_time=lambda: 1.0)
+    rendered_progress = str(column.render(test_task))
+    expected = "0.5/1.0 KB"
+    assert rendered_progress == expected
+
+
 def test_task_ids():
     progress = make_progress()
     assert progress.task_ids == [0, 1, 2, 4]