207.23% is the change from 166 to 510
Calculation steps:
[( 510 - 166 ) ÷ 166] x 100 = 207.23%
Formula
Percentage change = [(510 - 166) / 166] x 100
Subtract the new number by the original number
510 - 166 = 344
344 ÷ 166 = 2.072289156626506
2.072289156626506 x 100 = 207.23%