Calculations on proctabulated tables

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I have proc tabulated 2 tables A and B  and I want to  calculate proportions  on table C , can this be done easily on SAS.

Example below;

Table A

Tables	10
Chairs	15
Total	25

Table B

Blue Tables	5
Blue Chairs	5
Total	10

Table C ( proportion of B compared to A) i.e for tables (10-5)/10 *100

Tables	50
Chairs	66.66
Total	60