delta in line chart

[#1]

Hello,

I have a DB like so:

CALLING_MSISDN,      CALL_DATE,                WEEK,                PREMIUM_RATE

     1                              ,07-05-2016,              18-2016,                     3

     1                               ,08-05-2016,             18-2016                       5              

     1                              ,11-05-2016,               19-2016                     10

     2                              ,18-05-2016,               20-2016                     15    

     2                              ,23-05-2016,               21-2016                      5

......

I use a pivot table to show me the delta and delta% between the different weeks using this function:

IF ( RangeSum (Below(sum(PREMIUM_RATE)))<> 0, (sum(Total < CALLING_MSISDN, WEEK> PREMIUM_RATE) - RangeSum (Below(sum(PREMIUM_RATE))))/

sum(Total < CALLING_MSISDN, WEEK> PREMIUM_RATE)

, '')

CALLING_MSISDN	WEEK	PREMIUM_RATE	Delta	Delta %
05XXXXXXX	22-2016	₪ 119.27	₪-261.63	-219.36%
	21-2016	₪ 380.90	₪-70.73	-18.57%
	20-2016	₪ 451.63	₪ 96.21	21.30%
	19-2016	₪ 355.42	₪ 165.23	46.49%
	18-2016	₪ 190.19	₪ 166.92	87.76%
	17-2016	₪ 23.27

I want to display the delta % on a graph (line chart). So that I will see the weeks on the buttom and the % change  on the Y axis.

How can I do that?

Thank you