The song is doing fine... As long as it continues to get support on the radio it'll be fine.
Perfume
#5 Russia (-1)
#8 Malaysia (-1)
#14 Philippines (+1)
#19 Turkey (-10)
#21 South Africa (-11)
#24 Indonesia (-12)
#27 Mexico (-14)
#30 Sweden (-14)
#31 Brazil (-24)
#33 Spain (-21)
#35 Hong Kong (-21)
#40 Norway (-14)
#42 Taiwan (-16)
#48 Austria (-9)
#53 Russia (+71)
#55 Italy (-36)
#57 Germany (-11)
#58 Finland (-40)
#58 France (-29)
#60 Australia (-3)
#64 United States (-22)
#69 Belgium (-35)
#89 New Zealand (-12)
#94 Canada (-37)
#95 Romania (+9)
#97 Netherlands (-39)
#106 Switzerland (-30)
#111 Denmark (-37)
#127 India (-76)
#192 Hong Kong (+38)
It's getting worse each day.
