[{"cpuUtilizationPercent":"0.0","processId":"1","memoryUtilizationPercent":"0.1","command":"init","user":"root"},{"cpuUtilizationPercent":"0.3","processId":"2","memoryUtilizationPercent":"0.0","command":"kthreadd","user":"root"},{"cpuUtilizationPercent":"0.0","processId":"3","memoryUtilizationPercent":"0.0","command":"ksoftirqd/0","user":"root"},{"cpuUtilizationPercent":"0.732","processId":"5","memoryUtilizationPercent":"0.0","command":"kworker/0:+","user":"root"},{"cpuUtilizationPercent":"0.0","processId":"6","memoryUtilizationPercent":"0.0","command":"kworker/u3+","user":"root"},{"cpuUtilizationPercent":"0.0","processId":"8","memoryUtilizationPercent":"0.0","command":"rcu_sched","user":"root"}]

db.collection.update({},[{$set:{cpuUtilizationPercent:{$toDouble:"$cpuUtilizationPercent"}}}],{multi:true})