Percentage in Grafana using PromQL

Hello Grafana Community,

I have bit weird requirement in Dashboard.

Result. sum
Value1 53
Value2 65
Value3 100
Value4 64

and Here is my promql query for above result
sum by (result) (metrics_name)

I want to get percentage for each value like this way
for value1 it should be 53*100/(53+65+100+64) and I want to display same way for each value and want to display it in separate column in same table.

What change should I make in Grafana or PromQL? I am using Grafana 7.2.1.