diff --git a/bar.go b/bar.go
index 567dd69..8ebe793 100644
--- a/bar.go
+++ b/bar.go
@@ -3,7 +3,6 @@
 import (
 	"fmt"
 	"io"
-	"math"
 	"sync"
 	"time"
 	"unicode/utf8"
@@ -379,13 +378,13 @@
 	// bar width without leftEnd and rightEnd runes
 	barWidth := width - 2
 
-	completedWidth := percentage(total, current, barWidth)
+	completedWidth := decor.CalcPercentage(total, current, barWidth)
 
 	buf := make([]byte, 0, width)
 	buf = append(buf, fmtBytes[rLeft]...)
 
 	if rf != nil {
-		till := percentage(total, rf.till, barWidth)
+		till := decor.CalcPercentage(total, rf.till, barWidth)
 		rbytes := make([]byte, utf8.RuneLen(rf.char))
 		utf8.EncodeRune(rbytes, rf.char)
 		// append refill rune
@@ -439,21 +438,6 @@
 	return fmtBytes
 }
 
-func percentage(total, current, ratio int) int {
-	if total == 0 || current > total {
-		return 0
-	}
-	num := float64(ratio) * float64(current) / float64(total)
-	ceil := math.Ceil(num)
-	diff := ceil - num
-	// num = 2.34 will return 2
-	// num = 2.44 will return 3
-	if math.Max(diff, 0.6) == diff {
-		return int(num)
-	}
-	return int(ceil)
-}
-
 func getSpinner() func() byte {
 	chars := []byte(`-\|/`)
 	repeat := len(chars) - 1
diff --git a/decor/decorators.go b/decor/decorators.go
index 6356da3..54a2294 100644
--- a/decor/decorators.go
+++ b/decor/decorators.go
@@ -131,7 +131,7 @@
 	}
 	format += "%ds"
 	return func(s *Statistics, myWidth chan<- int, maxWidth <-chan int) string {
-		str := fmt.Sprintf("%d %%", percentage(s.Total, s.Current, 100))
+		str := fmt.Sprintf("%d %%", CalcPercentage(s.Total, s.Current, 100))
 		if (conf & DwidthSync) != 0 {
 			myWidth <- utf8.RuneCountInString(str)
 			max := <-maxWidth
@@ -144,11 +144,11 @@
 	}
 }
 
-func percentage(total, current, ratio int) int {
+func CalcPercentage(total, current, width int) int {
 	if total == 0 || current > total {
 		return 0
 	}
-	num := float64(ratio) * float64(current) / float64(total)
+	num := float64(width) * float64(current) / float64(total)
 	ceil := math.Ceil(num)
 	diff := ceil - num
 	// num = 2.34 will return 2