diff --git a/calc.go b/calc.go
index 5661d7d..ef8d0b0 100644
--- a/calc.go
+++ b/calc.go
@@ -975,6 +975,11 @@ func isOperatorPrefixToken(token efp.Token) bool {
 	return (token.TValue == "-" && token.TType == efp.TokenTypeOperatorPrefix) || (ok && token.TType == efp.TokenTypeOperatorInfix)
 }
 
+// isOperand determine if the token is parse operand perand.
+func isOperand(token efp.Token) bool {
+	return token.TType == efp.TokenTypeOperand && (token.TSubType == efp.TokenSubTypeNumber || token.TSubType == efp.TokenSubTypeText)
+}
+
 // getDefinedNameRefTo convert defined name to reference range.
 func (f *File) getDefinedNameRefTo(definedNameName string, currentSheet string) (refTo string) {
 	var workbookRefTo, worksheetRefTo string
@@ -1034,8 +1039,15 @@ func (f *File) parseToken(sheet string, token efp.Token, opdStack, optStack *Sta
 		}
 		optStack.Pop()
 	}
+	if token.TType == efp.TokenTypeOperatorPostfix && !opdStack.Empty() {
+		topOpd := opdStack.Pop().(efp.Token)
+		opd, err := strconv.ParseFloat(topOpd.TValue, 64)
+		topOpd.TValue = strconv.FormatFloat(opd/100, 'f', -1, 64)
+		opdStack.Push(topOpd)
+		return err
+	}
 	// opd
-	if token.TType == efp.TokenTypeOperand && (token.TSubType == efp.TokenSubTypeNumber || token.TSubType == efp.TokenSubTypeText) {
+	if isOperand(token) {
 		opdStack.Push(token)
 	}
 	return nil
diff --git a/calc_test.go b/calc_test.go
index 4c32983..cd09e97 100644
--- a/calc_test.go
+++ b/calc_test.go
@@ -46,6 +46,8 @@ func TestCalcCellValue(t *testing.T) {
 		"=2>=1":     "TRUE",
 		"=2>=3":     "FALSE",
 		"=1&2":      "12",
+		"=15%":      "0.15",
+		"=1+20%":    "1.2",
 		`="A"="A"`:  "TRUE",
 		`="A"<>"A"`: "FALSE",
 		// Engineering Functions
diff --git a/chart_test.go b/chart_test.go
index 8957b93..d2a3975 100644
--- a/chart_test.go
+++ b/chart_test.go
@@ -230,7 +230,7 @@ func TestAddChartSheet(t *testing.T) {
 	f.SetActiveSheet(sheetIdx)
 
 	// Test cell value on chartsheet
-	assert.EqualError(t, f.SetCellValue("Chart1", "A1", true), "sheet Chart1 is chart sheet")
+	assert.EqualError(t, f.SetCellValue("Chart1", "A1", true), "sheet Chart1 is not a worksheet")
 	// Test add chartsheet on already existing name sheet
 	assert.EqualError(t, f.AddChartSheet("Sheet1", `{"type":"col3DClustered","series":[{"name":"Sheet1!$A$2","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$2:$D$2"},{"name":"Sheet1!$A$3","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$3:$D$3"},{"name":"Sheet1!$A$4","categories":"Sheet1!$B$1:$D$1","values":"Sheet1!$B$4:$D$4"}],"title":{"name":"Fruit 3D Clustered Column Chart"}}`), ErrExistsWorksheet.Error())
 	// Test with unsupported chart type
diff --git a/excelize.go b/excelize.go
index def018b..24a1a4e 100644
--- a/excelize.go
+++ b/excelize.go
@@ -204,8 +204,8 @@ func (f *File) workSheetReader(sheet string) (ws *xlsxWorksheet, err error) {
 		ws = worksheet.(*xlsxWorksheet)
 		return
 	}
-	if strings.HasPrefix(name, "xl/chartsheets") {
-		err = fmt.Errorf("sheet %s is chart sheet", sheet)
+	if strings.HasPrefix(name, "xl/chartsheets") || strings.HasPrefix(name, "xl/macrosheet") {
+		err = fmt.Errorf("sheet %s is not a worksheet", sheet)
 		return
 	}
 	ws = new(xlsxWorksheet)
@@ -367,7 +367,7 @@ func (f *File) UpdateLinkedValue() error {
 	for _, name := range f.GetSheetList() {
 		ws, err := f.workSheetReader(name)
 		if err != nil {
-			if err.Error() == fmt.Sprintf("sheet %s is chart sheet", trimSheetName(name)) {
+			if err.Error() == fmt.Sprintf("sheet %s is not a worksheet", trimSheetName(name)) {
 				continue
 			}
 			return err
diff --git a/styles.go b/styles.go
index 31fa7fb..e4f3a27 100644
--- a/styles.go
+++ b/styles.go
@@ -3011,6 +3011,7 @@ func drawCondFmtCellIs(p int, ct string, format *formatConditional) *xlsxCfRule
 func drawCondFmtTop10(p int, ct string, format *formatConditional) *xlsxCfRule {
 	c := &xlsxCfRule{
 		Priority: p + 1,
+		Bottom:   format.Type == "bottom",
 		Type:     validType[format.Type],
 		Rank:     10,
 		DxfID:    &format.Format,