diff --git a/shellfolio.sh b/shellfolio.sh
index d10ce62..9922620 100644
--- a/shellfolio.sh
+++ b/shellfolio.sh
@@ -5,9 +5,11 @@
 minus=$(tput setaf 1)
 plus=$(tput setaf 2)
 neutral=$(tput sgr0)
-colwidths="$neutral%6s %15s %8s %8s %8s %12s %12s\n"
-total=0
+colwidths="$neutral%5s %14s %7s %7s %7s %12s %12s %12s\n"
+totalvalue=0
+totalgain=0
 
+# checks if value is positive or negative, returns color code
 colorize() {
         if [[ $1 == *"-"* ]]; then
                 color=$minus
@@ -17,12 +19,14 @@ colorize() {
         echo $color
 }
 
+# print table header
+printf "${colwidths}" "Coin" "USD" "+/- 1h" "+/- 24h" "+/- 7d" "Amount" "Value" "Gain"
+printf "${colwidths}" "-----" "--------------" "-------" "-------" "-------" "------------" "------------" "------------"
 
-printf "${colwidths}" "Symbol" "USD" "+/- 1h" "+/- 24h" "+/- 7d" "Amount" "Value"
-printf "${colwidths}" "------" "---------------" "--------" "--------" "--------" "------------" "------------"
-
+# print one line per coin
 for coin in $COINS
 do
+        # fetch data from coinmarketcap.com
         result=$(curl -s -XGET "https://api.coinmarketcap.com/v1/ticker/$coin/?convert=usd")
         if [[ $currency != *"error"* ]]; then
                 symbol=$(echo $result | jq ".[0].symbol" | xargs printf "%s\n")
@@ -30,27 +34,45 @@ do
                 change24h=$(echo $result | jq ".[0].percent_change_24h" | xargs printf "%.*f\n" 2)
                 change7d=$(echo $result | jq ".[0].percent_change_7d" | xargs printf "%.*f\n" 2)
                 usd=$(echo $result | jq ".[0].price_usd" | xargs printf "%.*f\n" 8)
-
+                
+                # set color to green or red 
                 col1h=$(colorize $change1h)
                 col24h=$(colorize $change24h)
                 col7d=$(colorize $change7d)
-
+                
+                # check if $symbol is set, split into $amount and $paid
                 if [ -z ${!symbol} ]; then
                         amount=0
+                        paid=0
                 else
-                        amount=${!symbol}
+                        IFS=: read -r amount paid <<< "${!symbol}"      
                 fi
-
+                
+                # calculates value of coins
                 value=$(echo "scale=2; $amount*$usd" | bc)
                 usd=$(echo "scale=2; $usd" | bc)
-                total=$(echo "scale=2; $value+$total" | bc)
+                totalvalue=$(echo "scale=2; $value+$totalvalue" | bc)
 
-                printf "$neutral%6s %15.6f $col1h%8s $col24h%8s $col7d%8s $neutral%12s %12.2f\n" "$symbol" "$usd" "$change1h%" "$change24h%" "$change7d%" "$amount" "$value"
+                # calculates gain               
+                if  [ "$paid" -eq "0" ]; then
+                        gain=0
+                else
+                        gain=$(echo "scale=2; $value-$paid" | bc)
+                fi
+                colgain=$(colorize $gain)
+                totalgain=$(echo "scale=2; $gain+$totalgain" | bc)
+                
+                # prints actual table line
+                printf "$neutral%5s %14.6f $col1h%7s $col24h%7s $col7d%7s $neutral%12s %12.2f $colgain%12.2f$neutral\n" "$symbol" "$usd" "$change1h%" "$change24h%" "$change7d%" "$amount" "$value" "$gain"
         fi
 
 done
 
-printf "${colwidths}" "------" "---------------" "--------" "--------" "--------" "------------" "------------"
-printf "%75.2f\n" "$total"
+# prints table footer
+printf "${colwidths}" "-----" "--------------" "-------" "-------" "-------" "------------" "------------" "------------"
+
+#prints total coin value and total gain
+colgain=$(colorize $totalgain)
+printf "%70.2f $colgain%12.2f$neutral\n" "$totalvalue" "$totalgain"
 
 exit 0