306.1% is the change from 164 to 666
Calculation steps:
[( 666 - 164 ) ÷ 164] x 100 = 306.1%
Formula
Percentage change = [(666 - 164) / 164] x 100
Subtract the new number by the original number
666 - 164 = 502
502 ÷ 164 = 3.0609756097560976
3.0609756097560976 x 100 = 306.1%