Correct progress calculation
Correct progress calculation

fixes #1385 on github

clever-crow-consulting/otm-core,maurizi/otm-core,RickMohr/otm-core,clever-crow-consulting/otm-core,recklessromeo/otm-core,recklessromeo/otm-core,recklessromeo/otm-core,maurizi/otm-core,RickMohr/otm-core,RickMohr/otm-core,RickMohr/otm-core,recklessromeo/otm-core,maurizi/otm-core,maurizi/otm-core,clever-crow-consulting/otm-core,clever-crow-consulting/otm-core