313.66% is the change from 161 to 666
Calculation steps:
[( 666 - 161 ) ÷ 161] x 100 = 313.66%
Formula
Percentage change = [(666 - 161) / 161] x 100
Subtract the new number by the original number
666 - 161 = 505
505 ÷ 161 = 3.1366459627329193
3.1366459627329193 x 100 = 313.66%