Expression Grafana

Can somebody help me, I having problem when using expression 3 query. For my case, the value is (0.870X1.02X1)*100= 88.74. But, when I use the expression function, it get 97.4. Can somebody?

Hi @arifuddin324

Are you using Expression in the Alerting Module or in the Dashboard module (while creating a panel)?

Also what is your Grafana version?