如何在 power bi 中按 id 减去昨天的计数减去今天的计数组?

How to subtract Yesterday count by today count group by id in power bi?

我正在尝试使用 startDate 和按 id 分组来减去昨天的计数。

预期结果是

id  startDate      count newColumn
xyz Yesterday date  46    40(yesterday-today)
xyz Today     date  6    today-nextday
measure= calculate(sum(count), previousday(startdate))