Change in open interest Vs Volume question

#1
Below is the Nifty 5800 put option details expiring on 25th April.


Strike *******LTP******Volume******Chng in OI*****OI

5800 *******28.20*****405,316*****1,523,550*****5,261,350


As per my understanding, for each increase in Chng in OI, the volume should increase by one. The volume should be always more than or equal to Chng in OI. What I missed in the above quote?

Thanks in advance.
 

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