Thanks @SudeepGhatakNZ , I got it. There were blank values coming for power BI values when using
item()?['LTE_KPI_Cells_Daily[D_ACC%(C)]']. After changing to "item()?['D_ACC%(C)']" and doing formatting, it is getting success with all conversion method.
Thanks once again for helping in identifying the issue.
"inputs": {
"from": "@triggerBody()?['entity']?['Power BI values']",
"select": {
"Decimal": "@item()?['D_ACC%(C)']",
"DecimalFormat": "@formatNumber(float(coalesce(item()?['D_ACC%(C)'], 0)), '0.00')",
"DecimalFormat2": "@formatNumber(float(item()?['D_ACC%(C)']), '0.00')"