Why are there less total packets than packets dropped? How is this possible?

Issue

Why are there less total packets than packets dropped? How is this possible?

[root@rhel ~]# ip -s -s link ls dev tap0
42: tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc
pfifo_fast master qbr0 state UNKNOWN mode DEFAULT qlen 1000
    link/ether fe:16:3e:cc:bb:aa brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast
    56758594   306795   0       0       0       0
    RX errors: length   crc     frame   fifo    missed
               0        0       0       0       0
    TX: bytes  packets  errors  dropped carrier collsns
    14362608   180963   0       415751  0       0
    TX errors: aborted  fifo   window heartbeat transns
               0        0       0       0       0