diff --git a/frontend/src/components/Arena.tsx b/frontend/src/components/Arena.tsx
index 7926ad1..91cc7ee 100644
--- a/frontend/src/components/Arena.tsx
+++ b/frontend/src/components/Arena.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useMemo, useState } from "react";
-import { outcomeLabel, pct, kickoffDisplay, winProb } from "@/lib/format";
+import { outcomeLabel, pctParts, kickoffDisplay, winProb } from "@/lib/format";
 import { type Lang, dict, teamShort } from "@/lib/i18n";
 import type {
   Outcome,
@@ -542,15 +542,15 @@ export default function Arena({
           Crowd Pick{" "}
           <span className="text-[14px] text-[var(--ink-muted)]">{t.crowdSub}</span>
         </div>
-        {/* 비율은 분포 합 기준(=total 과 동일해야 정상) — 구 데이터 불일치 시에도 100% 이내로 표시 */}
+        {/* 비율은 분포 합 기준 + 합이 항상 100% 되도록 보정(최대 잔여 방식) */}
         <div className="flex h-14 overflow-hidden rounded-2xl border border-[var(--line-d)]">
           {(() => {
-            const sum = crowd.teamAWin + crowd.draw + crowd.teamBWin;
+            const [a, d, b] = pctParts([crowd.teamAWin, crowd.draw, crowd.teamBWin]);
             return (
               <>
-                <CrowdSeg team={match.teamA} value={pct(crowd.teamAWin, sum)} tone="a" />
-                <CrowdSeg value={pct(crowd.draw, sum)} tone="draw" />
-                <CrowdSeg team={match.teamB} value={pct(crowd.teamBWin, sum)} tone="b" />
+                <CrowdSeg team={match.teamA} value={a} tone="a" />
+                <CrowdSeg value={d} tone="draw" />
+                <CrowdSeg team={match.teamB} value={b} tone="b" />
               </>
             );
           })()}
diff --git a/frontend/src/lib/format.ts b/frontend/src/lib/format.ts
index 00911b8..0714526 100644
--- a/frontend/src/lib/format.ts
+++ b/frontend/src/lib/format.ts
@@ -55,6 +55,27 @@ export function pct(part: number, total: number): number {
   return Math.round((part / total) * 100);
 }
 
+// 여러 비율을 정수 %로 — 합이 항상 정확히 100 (최대 잔여 방식).
+// 각자 따로 반올림하면 99/101 이 나오는 문제를 방지.
+export function pctParts(parts: number[]): number[] {
+  const total = parts.reduce((s, p) => s + p, 0);
+  if (!total) return parts.map(() => 0);
+  const raw = parts.map((p) => (p / total) * 100);
+  const floor = raw.map(Math.floor);
+  let remainder = 100 - floor.reduce((s, v) => s + v, 0);
+  // 소수부가 큰 순서로 남은 %를 1씩 분배
+  const order = raw
+    .map((v, i) => ({ i, frac: v - Math.floor(v) }))
+    .sort((a, b) => b.frac - a.frac);
+  const out = [...floor];
+  for (const { i } of order) {
+    if (remainder <= 0) break;
+    out[i] += 1;
+    remainder -= 1;
+  }
+  return out;
+}
+
 // "방금 전 / 3분 전 / 2시간 전 / 5일 전" — 댓글 상대시간
 export function relativeTime(iso: string, lang: Lang = "ko"): string {
   const then = new Date(iso).getTime();