Beneficiaries can be set through a 'comment_options' operation by the platform/app you use to create your post. Many apps take a small percentage from their users to be able to pay for their servers/maintaining costs etc.

For example, when you create a post on Steemit.com, you will receive ~ 75% as author reward and ~ 25% will go to the curators, but there won't be any beneficiaries being set, because Steemit does not take a part of your author rewards (they pay for their own infrastructure with the help of other sources of income, ads for example).

Other platforms/apps may take a few percent of your rewards, so that they can continue their services. In your case, the account 'drugwars' always gets 20% and 'drugwars-dealer' gets 15%. I don't know how the 35% are exactly being used in the game, but I guess the details are mentioned somewhere on their website. The real percentage differs, because in case of 35% beneficiary rewards, it will be 35% of 75% (the author part) ~ 26%.

I don't know which post you are referring to, but I saw that the post https://steemit.com/drugwars/@ezzet/3903da8ae7 is being shown with $0.23 on Steemit and $0.25 on SteemWorld. As total amount I use the exact value from the blockchain, so $0.25 seems to be correct here.

Do I understand you correctly, that you want to have an additional column next to the total payout amount, which shows the amount we will receive after subtracting the curation and beneficiaries part?