In GeoGebra, you can use CAS to compute percentages and growth factors. 
     In CAS, you can calculate percentages directly using the % symbol. If you want to find  % of                                                                                                                                                                                                                                          $, write: 600*30%. 
A growth factor can be written like this, where is the percentage: .
     GeoGebra Instruction 1
CAS     under         View     in         Menu.         CAS     using         the         commands         above         and         press         Enter     or         click         on         Numeric     Evaluation