public function calculateEnpsGrade(ClientSurvey $clientSurvey, array $applicantIds): int 	{ 		$clientSurvey = $clientSurvey->load(['applicants']); 		$calculatedData = $this->calculatePercentageDataForEnpsGradeCalculation($clientSurvey, $applicantIds);  		return $this->calculateEnpsGradeUsingPreparedData($calculatedData['promotorsPercentage'], $calculatedData['criticsPercentage']); 	}