Hello,

In January session 869010 candidates appeared in JEE main paper 1 so your expected rank can be calculated using the formula (100-your total percentile)*869010/100

And as said by you if 1000000 candidates appear in April session then your expected rank will be calculates using the formula (100- your total percentile)*1000000/100

Number of candidates apperead in April session will be used to calculate.And your expected rank changes,The best of two ranks will be considered for admission,