Function: 100 *(minus(numbers('epe'), numbers("xxx")) if numbers('epe') if logn(minus(numbers('epe'), numbers("xxx"))) > numbers("xxx") if minus(numbers('epe'), numbers("xxx")) > logn(minus(numbers('epe'), numbers("xxx"))) else numbers('epe') else minus(numbers('epe'), numbers("xxx")) > logn(minus(numbers('epe'), numbers("xxx"))) else numbers("xxx") if logn(minus(numbers('epe'), numbers("xxx"))) > minus(numbers('epe'), numbers("xxx")) else numbers('epe'))