diff --git a/source/tools/monitor/unity/collector/container/cg_cpuacct_stat.lua b/source/tools/monitor/unity/collector/container/cg_cpuacct_stat.lua
index 1d6ec301b38a66989d4c2782d497bcfe5ebeff90..a5d5ab07ed4c03f5c30191557a7e1598634c76e8 100644
--- a/source/tools/monitor/unity/collector/container/cg_cpuacct_stat.lua
+++ b/source/tools/monitor/unity/collector/container/cg_cpuacct_stat.lua
@@ -52,10 +52,10 @@ function CgCpuacctStat:proc(elapsed, lines)
 		name = cell[1]
 		local prev = self.values[c]
 		local now = tonumber(cell[num])
-		local rate = tonumber(((now - prev)*100.0) / self.hostCpuSum)
+		local rate = (100.00*tonumber((now - prev)))/ tonumber(self.hostCpuSum)
 		values[c] = {
 			name = name,
-			value = tonumber(rate)
+			value = rate
 		}
 		self.values[c] = now
 		self.conTotal = self.conTotal + (now - prev)