You can use the following percentage functions when defining a formula or a calculated key figure as an operator.
Operator 
Operator Name 
Description 

% 
Percentage Deviation 
<Operand1> % <Operand2> Specifies the percentage deviation of Operand1 to Operand2. Identical to the formula 100 * (<Operand1>  <Operand2>) / abs(<Operand2>) if <Operand2> is not equal to 0, as well as with the error value for 'Division by 0' if <Operand2> equals 0. 
%A 
Percentage 
<Operand1> %A <Operand2> Specifies the percentage amount of Operand1 to Operand2. Identical to the formula 100 * (<Operand1>  <Operand2>) / abs(<Operand2>) if <Operand2> is not equal to 0, as well as with the error value for 'Division by 0' if <Operand2> equals 0. 
%CT 
Percentage of Total 
%CT <Operand> Specifies how high the percentage amount is with regard to the result. Result here means the result of the aggregation at the nexthighest level (intermediate result). 
%GT 
Percentage of Total of the Grand Total 
%GT <Operand> Specifies how high the percentage amount is with regard to the grand total. Grand total here means the result of the aggregation at the highest level of the list. The dynamic filters (filters that were not already defined in the Query Designer) are also included in the calculation of the grand total. 
%RT 
Percentage of Total of Query Total 
%RT <Operand> The same as the percentage function %GT; In contrast to the calculation of the grand total, the dynamic filters are not included in the calculation of the query result, that is, it is always normalized to the same size, irrespective of the dynamic filter and navigation status. 
Percentage Deviation (%)
'Planned Revenue' % 'Actual Revenue' specifies the percentage by which the actual revenue exceeds the planned revenue.
Percentage Amount (%A)
'Fixed Costs' %A 'Costs' specifies how high the fixed cost part is of a product total cost.
Percentage of Total of Result (%CT)
Year 
Region 
Revenue 
%CT 'Sales' 

1999 
North 
30 
50 

South 
30 
50 

Result 1999 
60 
33,3333 
2000 
North 
60 
50 

South 
60 
50 

Result 2000 
120 
66,6667 
Overall result 

180 
100 
Percentage of Total of the Grand Total (%GT)
Year 
Region 
Revenue 
%GT 'Sales' 

1999 
North 
30 
16,6667 

South 
30 
16,6667 

Result 1999 
60 
33.3333 
2000 
North 
60 
33,3333 

South 
60 
33,3333 

Result 2000 
120 
66,6667 
Overall result 

180 
100 
Percentage of Total of Query Total (%RT)
Year 
Region 
Revenue 
%RT 'Sales' 

1999 
North 
30 
16,6667 

South 
30 
16,6667 

Result 1999 
60 
33,3333 
Overall result 

60 
66,6667 
The year 1999 is in the dynamic filter. The 100% refers to the revenue 180 that cannot be seen in the table (including Jahr 2000) (see %GT).