fix #182

src/Grid/Displayers/ProgressBar.php

@@ -12,7 +12,7 @@ class ProgressBar extends AbstractDisplayer
 
         return <<<EOT
 <div class="shadow-100 progress $style">
-  <div class="progress-bar" role="progressbar" aria-valuenow="{$this->value}" aria-valuemin="0" aria-valuemax="100" style="width:{$this->value}%"></div>
+  <div class="progress-bar" role="progressbar" aria-valuenow="{$this->value}" aria-valuemin="0" aria-valuemax="{$max}" style="width:{$this->value}%"></div>
 </div>
 EOT;
     }