diff --git a/src/activities/reader/EpubReaderActivity.cpp b/src/activities/reader/EpubReaderActivity.cpp
index 18600780..49a352a0 100644
--- a/src/activities/reader/EpubReaderActivity.cpp
+++ b/src/activities/reader/EpubReaderActivity.cpp
@@ -300,21 +300,16 @@ void EpubReaderActivity::jumpToPercent(int percent) {
 }
 
 // Compute the overall reading position as a percent of the book.
-int EpubReaderActivity::getCurrentPercent() const {
-  if (!epub || epub->getBookSize() == 0) {
-    return 0;
+float EpubReaderActivity::getBookProgressPercent() const {
+  if (!epub || epub->getBookSize() == 0 || !section || section->pageCount == 0) {
+    return 0.0f;
   }
 
   // Estimate within-spine progress based on the current page.
-  float chapterProgress = 0.0f;
-  if (section && section->pageCount > 0) {
-    chapterProgress = static_cast<float>(section->currentPage) / static_cast<float>(section->pageCount);
-  }
+  const float chapterProgress = static_cast<float>(section->currentPage) / static_cast<float>(section->pageCount);
 
   // Convert to overall progress using cumulative spine sizes.
-  const float progress = epub->calculateProgress(currentSpineIndex, chapterProgress);
-  const int percent = static_cast<int>(progress * 100.0f + 0.5f);
-  return clampPercent(percent);
+  return epub->calculateProgress(currentSpineIndex, chapterProgress) * 100.0f;
 }
 
 void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction action) {
@@ -362,7 +357,7 @@ void EpubReaderActivity::onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction
     }
     case EpubReaderMenuActivity::MenuAction::GO_TO_PERCENT: {
       // Launch the slider-based percent selector and return here on confirm/cancel.
-      const int initialPercent = getCurrentPercent();
+      const int initialPercent = clampPercent(static_cast<int>(getBookProgressPercent() + 0.5f));
       xSemaphoreTake(renderingMutex, portMAX_DELAY);
       exitActivity();
       enterNewActivity(new EpubReaderPercentSelectionActivity(
@@ -515,9 +510,7 @@ void EpubReaderActivity::renderScreen() {
     if (pendingPercentJump && section->pageCount > 0) {
       // Apply the pending percent jump now that we know the new section's page count.
       int newPage = static_cast<int>(pendingSpineProgress * static_cast<float>(section->pageCount));
-      if (newPage < 0) {
-        newPage = 0;
-      } else if (newPage >= section->pageCount) {
+      if (newPage >= section->pageCount) {
         newPage = section->pageCount - 1;
       }
       section->currentPage = newPage;
@@ -637,8 +630,7 @@ void EpubReaderActivity::renderStatusBar(const int orientedMarginRight, const in
   int progressTextWidth = 0;
 
   // Calculate progress in book
-  const float sectionChapterProg = static_cast<float>(section->currentPage) / section->pageCount;
-  const float bookProgress = epub->calculateProgress(currentSpineIndex, sectionChapterProg) * 100;
+  const float bookProgress = getBookProgressPercent();
 
   if (showProgressText || showProgressPercentage) {
     // Right aligned text for progress counter
diff --git a/src/activities/reader/EpubReaderActivity.h b/src/activities/reader/EpubReaderActivity.h
index 76ba95f9..ba615cde 100644
--- a/src/activities/reader/EpubReaderActivity.h
+++ b/src/activities/reader/EpubReaderActivity.h
@@ -33,11 +33,11 @@ class EpubReaderActivity final : public ActivityWithSubactivity {
   void renderContents(std::unique_ptr<Page> page, int orientedMarginTop, int orientedMarginRight,
                       int orientedMarginBottom, int orientedMarginLeft);
   void renderStatusBar(int orientedMarginRight, int orientedMarginBottom, int orientedMarginLeft) const;
+  // Compute overall book progress as a percentage in the range 0-100.
+  float getBookProgressPercent() const;
   void saveProgress(int spineIndex, int currentPage, int pageCount);
   // Jump to a percentage of the book (0-100), mapping it to spine and page.
   void jumpToPercent(int percent);
-  // Compute the current reading position as an integer percent (0-100).
-  int getCurrentPercent() const;
   void onReaderMenuBack();
   void onReaderMenuConfirm(EpubReaderMenuActivity::MenuAction action);