diff --git a/bonemarketsolver/challenge_functions.py b/bonemarketsolver/challenge_functions.py
index 688b29d..cb025ce 100644
--- a/bonemarketsolver/challenge_functions.py
+++ b/bonemarketsolver/challenge_functions.py
@@ -13,7 +13,9 @@ def narrow_challenge(difficulty_level: int, stat: int):
         return stat/10
 
 def broad_challenge(difficulty_level: int, stat: int):
-    chance = DIFFICULTY_SCALER*stat//difficulty_level
+    chance = DIFFICULTY_SCALER*stat/difficulty_level * 100
+    chance = chance // 1
+    chance /= 100
 
     return chance