I don't know where you got the price 0.1257 USD per ICN.
As you can see I got 4,549.67 for 1 BTC, which was locked at 605.893 (https://medium.com/iconominet/iconomi-ico-token-share-calculation-finalised-9747e69d496d#.fsd2e7es3)
So 605.893/4549.67 = 0.133172955401161 USD for 1 ICN.
YOU paid 0.1331 USD per ICN because YOU paid in Bitcoin.
ICN was purchased using numerous currencies : BTC, ETH, LSK, USD, EUR. These were all converted to USD for the final calculations by ICONOMI.
According to the article you quoted:
"TOTAL AMOUNT RAISED (official number):
10,682,516.42 USD"
That amount of USD bought 85M tokens.
The AVERAGE price per ICN over ALL FIVE CURRENCIES COLLECTED is 10,682,516.42 / 85,000,000 = 0.125676663 = 0.1257 USD per ICN.
THAT'S where I got the price 0.1257 USD per ICN.
Everyone who bought in with BTC and/or FIAT paid ~0.1331 USD per ICN. So we have to consider THIS number and not the average number to calculate the % of ICN value fluctuation.