diff --git a/entity-types/ext-service/golden_metrics.yml b/entity-types/ext-service/golden_metrics.yml
index 7cf801936..369346436 100644
--- a/entity-types/ext-service/golden_metrics.yml
+++ b/entity-types/ext-service/golden_metrics.yml
@@ -23,7 +23,7 @@ errorRate:
   unit: PERCENTAGE
   queries:
     opentelemetry:
-      select: filter(count(%.server%duration), WHERE numeric(http.status_code) >= 500 OR numeric(http.response.status_code) >= 500)/count(%.server%duration)
+      select: filter(count(%.server%duration), WHERE numeric(http.status_code) >= 500 OR numeric(http.response.status_code) >= 500) * 100 / count(%.server%duration)
       from: Metric
       where: http.server.duration IS NOT NULL OR http.server.request.duration IS NOT NULL
     newrelic-opentelemetry: