1. SAP Help Portal
SAP Analytics Cloud Documentation
"Script Formulas and Calculations in Advanced Formulas": This official guide details the syntax for advanced formulas. It explicitly states
"To use a script variable in a statement
enclose its name in percent signs (%)." It also confirms that # represents the unassigned member and that / and are arithmetic operators.
2. SAP Help Portal
SAP Analytics Cloud Documentation
"Examples of Advanced Formulas": This section provides practical examples where variables are declared and then used with the % syntax
such as MEMBERSET [d/Measures] = %TargetMeasure%. This reinforces the role of the % character in designating a variable for use in a calculation.