diff --git a/frontend/analytics.html b/frontend/analytics.html
index 955ca6a..4cb2337 100644
--- a/frontend/analytics.html
+++ b/frontend/analytics.html
@@ -439,7 +439,8 @@
           <th>Попыток</th>
         </tr></thead><tbody>`;
       hardQuestions.forEach((q, i) => {
-        const errPct = Math.round((q.errorRate || 0) * 100);
+        // errorRate приходит из API уже в процентах (0–100), не умножаем повторно
+        const errPct = Math.round(q.errorRate || 0);
         const errCls = errPct >= 60 ? 'hq-pct-hi' : errPct >= 35 ? 'hq-pct-mid' : 'hq-pct-lo';
         const diffLabel = q.difficulty === 1 ? 'Лёгкий' : q.difficulty === 2 ? 'Средний' : 'Сложный';
         const diffCls = q.difficulty === 1 ? 'diff-1' : q.difficulty === 2 ? 'diff-2' : 'diff-3';