diff --git a/escher/src/layout_field.cpp b/escher/src/layout_field.cpp
index 43796de71..bce750824 100644
--- a/escher/src/layout_field.cpp
+++ b/escher/src/layout_field.cpp
@@ -234,7 +234,11 @@ bool LayoutField::privateHandleEvent(Ion::Events::Event event) {
       setEditing(true);
     }
     if (event.hasText()) {
-      handleEventWithText(event.text());
+      if(event.text() == "%" && Ion::Events::isLockActive() ){
+        m_contentView.cursor()->performBackspace();
+      } else {
+        handleEventWithText(event.text());
+      }
     } else if (event == Ion::Events::Paste) {
       handleEventWithText(Clipboard::sharedClipboard()->storedText(), false, true);
     } else {
diff --git a/escher/src/text_area.cpp b/escher/src/text_area.cpp
index 0b61fa3cf..10dfe6c91 100644
--- a/escher/src/text_area.cpp
+++ b/escher/src/text_area.cpp
@@ -112,8 +112,6 @@ bool TextArea::handleEvent(Ion::Events::Event event) {
     contentView()->moveCursorGeo(INT_MAX/2, 0);
   } else if (event == Ion::Events::Backspace) {
     return removePreviousGlyph();
-  } else if (event.hasText()) {
-    return handleEventWithText(event.text());
   } else if (event == Ion::Events::EXE) {
     return handleEventWithText("\n");
   } else if (event == Ion::Events::Clear) {
@@ -122,6 +120,14 @@ bool TextArea::handleEvent(Ion::Events::Event event) {
     }
   } else if (event == Ion::Events::Paste) {
     return handleEventWithText(Clipboard::sharedClipboard()->storedText());
+  } else if (event == Ion::Events::Percent) {
+    return removePreviousGlyph();
+  } else if (event.hasText()) {
+    if(event.text() == "%" && Ion::Events::isLockActive()){
+      return removePreviousGlyph();
+    } else {
+      return handleEventWithText(event.text());
+    }
   } else {
     return false;
   }
diff --git a/ion/include/ion/events.h b/ion/include/ion/events.h
index ec55f9ea4..1caffaeb7 100644
--- a/ion/include/ion/events.h
+++ b/ion/include/ion/events.h
@@ -55,6 +55,7 @@ ShiftAlphaStatus shiftAlphaStatus();
 void setShiftAlphaStatus(ShiftAlphaStatus s);
 bool isShiftActive();
 bool isAlphaActive();
+bool isLockActive();
 void updateModifiersFromEvent(Event e);
 
 // Plain
@@ -180,6 +181,7 @@ constexpr Event ShiftThree = Event::ShiftKey(Keyboard::Key::Three);
 constexpr Event Colon = Event::AlphaKey(Keyboard::Key::XNT);
 constexpr Event SemiColon = Event::AlphaKey(Keyboard::Key::Var);
 constexpr Event DoubleQuotes = Event::AlphaKey(Keyboard::Key::Toolbox);
+constexpr Event Percent = Event::AlphaKey(Keyboard::Key::Back);
 
 constexpr Event LowerA = Event::AlphaKey(Keyboard::Key::Exp);
 constexpr Event LowerB = Event::AlphaKey(Keyboard::Key::Ln);
@@ -218,7 +220,6 @@ constexpr Event Exclamation = Event::AlphaKey(Keyboard::Key::Dot);
 constexpr Event alphaans = Event::AlphaKey(Keyboard::Key::Ans);
 
 // Shift + Alpha
-constexpr Event Percent = Event::ShiftAlphaKey(Keyboard::Key::Back);
 constexpr Event SimpleQuote = Event::ShiftAlphaKey(Keyboard::Key::Toolbox);
 
 constexpr Event UpperA = Event::ShiftAlphaKey(Keyboard::Key::Exp);
diff --git a/ion/include/ion/keyboard/layout_B2/layout_events.h b/ion/include/ion/keyboard/layout_B2/layout_events.h
index 01338d947..8c8c46f07 100644
--- a/ion/include/ion/keyboard/layout_B2/layout_events.h
+++ b/ion/include/ion/keyboard/layout_B2/layout_events.h
@@ -87,7 +87,7 @@ static constexpr const char * s_nameForEvent[255] = {
   //Shift+Alpha,
   nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
   nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-  nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+  nullptr, nullptr, nullptr, nullptr, nullptr, "Percent",
   "UpperA", "UpperB", "UpperC", "UpperD", "UpperE", "UpperF",
   "UpperG", "UpperH", "UpperI", "UpperJ", "UpperK", "UpperL",
   "UpperM", "UpperN", "UpperO", "UpperP", "UpperQ", nullptr,
diff --git a/ion/include/ion/keyboard/layout_B3/layout_events.h b/ion/include/ion/keyboard/layout_B3/layout_events.h
index fc9f20fe2..9e1fde2af 100644
--- a/ion/include/ion/keyboard/layout_B3/layout_events.h
+++ b/ion/include/ion/keyboard/layout_B3/layout_events.h
@@ -87,7 +87,7 @@ static constexpr const char * s_nameForEvent[255] = {
   //Shift+Alpha,
   nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
   nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-  nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+  nullptr, nullptr, nullptr, nullptr, nullptr, "Percent",
   "UpperA", "UpperB", "UpperC", "UpperD", "UpperE", "UpperF",
   "UpperG", "UpperH", "UpperI", "UpperJ", "UpperK", "UpperL",
   "UpperM", "UpperN", "UpperO", "UpperP", "UpperQ", nullptr,
diff --git a/ion/src/shared/events_modifier.cpp b/ion/src/shared/events_modifier.cpp
index 959350c8b..ddfdb4c10 100644
--- a/ion/src/shared/events_modifier.cpp
+++ b/ion/src/shared/events_modifier.cpp
@@ -18,6 +18,10 @@ bool isAlphaActive() {
   return sShiftAlphaStatus == ShiftAlphaStatus::Alpha || sShiftAlphaStatus == ShiftAlphaStatus::ShiftAlpha || sShiftAlphaStatus == ShiftAlphaStatus::AlphaLock || sShiftAlphaStatus == ShiftAlphaStatus::ShiftAlphaLock;
 ;
 }
+  
+bool isLockActive() {
+  return sShiftAlphaStatus == ShiftAlphaStatus::AlphaLock || sShiftAlphaStatus == ShiftAlphaStatus::ShiftAlphaLock;
+}
 
 void setShiftAlphaStatus(ShiftAlphaStatus s) {
   sShiftAlphaStatus = s;