Get all changes in a resource group

GetAllChangesInResourceGroup.kql

resourcechanges
| where resourceGroup =~ 'your_resource_group_name'
| 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
| order by changeTime desc
| project changeTime, targetResourceId, changeType, correlationId, changeCount, changedProperties