[FIX/BE] add percent rasio in statistic dashboard

internal/modules/dashboards/services/dashboard.service.go

@@ -124,48 +124,35 @@ func (s dashboardService) buildPerformanceStatistics(ctx context.Context, params
 		}
 	}
 
-	hppPercent := 0.0
-	if hppLast > 0 {
-		hppPercent = (hppCurrent - hppLast) / hppLast * 100
-	}
-
-	sellingPercent := 0.0
-	if sellingLast > 0 {
-		sellingPercent = sellingCurrent / sellingLast * 100
-	}
+	hppPercent := percentDelta(hppCurrent, hppLast)
+	sellingPercent := percentDelta(sellingCurrent, sellingLast)
 
 	stats := []dto.DashboardStatisticsDTO{
 		{
 			Label:            "HPP Global",
 			Value:            roundTo(hppCurrent, 0),
-			PercentLastMonth: hppPercent,
+			PercentLastMonth: roundTo(hppPercent*100, 2),
 		},
 		{
 			Label:            "Avg. Selling Price",
 			Value:            roundTo(sellingCurrent, 0),
-			PercentLastMonth: sellingPercent,
+			PercentLastMonth: roundTo(sellingPercent*100, 2),
 		},
 	}
 
 	if hasFilter {
-		fcrPercent := 0.0
-		if fcrLast > 0 {
-			fcrPercent = (fcrCurrent - fcrLast) / fcrLast * 100
-		}
-		mortalityPercent := 0.0
-		if mortalityLast > 0 {
-			mortalityPercent = (mortalityCurrent - mortalityLast) / mortalityLast * 100
-		}
+		fcrPercent := percentDelta(fcrCurrent, fcrLast)
+		mortalityPercent := percentDelta(mortalityCurrent, mortalityLast)
 		stats = append(stats,
 			dto.DashboardStatisticsDTO{
 				Label:            "FCR",
 				Value:            roundTo(fcrCurrent, 2),
-				PercentLastMonth: fcrPercent,
+				PercentLastMonth: roundTo(fcrPercent*100, 2),
 			},
 			dto.DashboardStatisticsDTO{
 				Label:            "Mortality",
 				Value:            roundTo(mortalityCurrent, 2),
-				PercentLastMonth: mortalityPercent,
+				PercentLastMonth: roundTo(mortalityPercent*100, 2),
 			},
 		)
 	}
@@ -849,6 +836,13 @@ func buildComparisonPercentChart(seriesRows []repository.ComparisonSeries, weeks
 	}
 }
 
+func percentDelta(current, last float64) float64 {
+	if last <= 0 {
+		return 0
+	}
+	return (current - last) / last
+}
+
 func (s dashboardService) calculateHppGlobal(ctx context.Context, filter *validation.DashboardFilter, startDate, endExclusive, endDate time.Time, location *time.Location) (float64, float64, error) {
 	totalEggKg, err := s.Repository.SumEggProductionWeightKg(ctx, startDate, endExclusive, filter)
 	if err != nil {