Get changes that happened before specific time in a resource group

GetChangesBeforeSpecificTime.kql

resourcechanges
| where resourceGroup =~ '{ResourceGroup:resourcegroup}'
| extend  changeTime = todatetime(properties.changeAttributes.timestamp),
          targetResourceId = tostring(properties.targetResourceId),
          changeType = tostring(properties.changeType),
          correlationId = properties.changeAttributes.correlationId,
          changedProperties = properties.changes,
          changeCount = properties.changeAttributes.changesCount
| where changeTime < todatetime('{fireTime}')
| order by changeTime desc
| project changeTime, targetResourceId, changeType, correlationId, changeCount, changedProperties