"Percentage" of "Running Total" in "Sum" from Pivot Table?

"Percentage" of "Running Total" in "Sum" from Pivot Table?

Hello,

From the below table , I have already added a Running Total of values (Col 1, Col 2 & Col 3)
Now, I would like add another columns next to each Columns with the percentage of those Running Totals respective to the last column (Total of Col 1 + 2 + 3).

Please let me know how can I get this.

Thanks in advance.


Month&Year of Date of Purchase
Col 1
 
Col 2
 
Col 3
 
Col 1 + 2 + 3
Feb 2016
Rs.0.00
0%
Rs.0.00
0%
Rs.13,880.18
100%
13,880.18
Apr 2016
Rs.0.00
0%
Rs.0.00
0%
Rs.21,198.74
100%
21,198.74
Jul 2016
Rs.0.00
0%
Rs.0.00
0%
Rs.39,887.59
100%
39,887.59
Oct 2016
Rs.0.00
0%
Rs.0.00
0%
Rs.56,032.27
100%
56,032.27
Nov 2016
Rs.0.00
0%
Rs.83,541.93
32%
Rs.180,732.56
68%
264,274.49
Dec 2016
Rs.0.00
0%
Rs.83,541.93
23%
Rs.283,696.12
77%
367,238.05
Jan 2017
Rs.0.00
0%
Rs.83,541.93
19%
Rs.351,887.86
81%
435,429.79
Feb 2017
Rs.0.00
0%
Rs.83,541.93
15%
Rs.467,990.06
85%
551,531.99
Mar 2017
Rs.0.00
0%
Rs.83,541.93
10%
Rs.718,997.84
90%
802,539.77
Apr 2017
Rs.0.00
0%
Rs.147,747.66
16%
Rs.777,651.90
84%
925,399.56
May 2017
Rs.0.00
0%
Rs.163,575.69
12%
Rs.1,155,521.77
88%
1,319,097.46
Jun 2017
Rs.0.00
0%
Rs.163,575.69
10%
Rs.1,557,560.36
90%
1,721,136.05
Jul 2017
Rs.0.00
0%
Rs.255,085.64
13%
Rs.1,688,707.07
87%
1,943,792.71
Oct 2017
Rs.22,236.87
1%
Rs.255,085.64
13%
Rs.1,688,707.07
86%
1,966,029.58
Nov 2017
Rs.22,236.87
1%
Rs.283,830.26
13%
Rs.1,946,850.85
86%
2,252,917.98
Jan 2018
Rs.22,236.87
1%
Rs.283,830.26
12%
Rs.2,036,736.37
87%
2,342,803.50
Feb 2018
Rs.22,236.87
1%
Rs.283,830.26
12%
Rs.2,062,219.68
87%
2,368,286.81