In my chart, There must be two expression one of them must be bar and other should be line
line should show changes between years as percent
I attach my example in SITA tab on the right side you will see chart
I put the changes percent in text box and they are on chart
change.png 35.7 K
change chart type as Combo chart.
and Add this as ur 2nd expr on your chart, column(1)/above(column(1))-1
and go to Axes tab- > select the 2nd expr and select right option in the position.
then go to number tab -> select the 2nd expr and select Fixed to as well as check the show in percent check box.
I Hope it will help You.....