showing in percentage?

[#1]

Hi i have stacked bar chart

total space is 500

here used space is 250 and unused space 250

i want see this informat of 50% (used  space), 50% ( un used  space)  but now i have in format of 250,250

i want see in format of 50% and 50%.

in single bar i have like upto used space  having in black colour(250), remining space in white colour.

as above i want instead of  250 like 50%

here i have used expression only

sum(usedspace)

[CELAMBARASAN]

Please attach a sample file.

Try adding one more expression as 1 - Sum(usedspace)/500

And change your first expression as Sum(usedspace)/500

Change number format in number tab as needed and Enable the  "In Percent".

[ecolomer]

you can chlice option Relative in expression

[#4]

i have tried no use with it

[#5]

50% reached to output

total space is dynamically change(467) not always same  what todo there