210.24% is the change from 166 to 515
Calculation steps:
[( 515 - 166 ) ÷ 166] x 100 = 210.24%
Formula
Percentage change = [(515 - 166) / 166] x 100
Subtract the new number by the original number
515 - 166 = 349
349 ÷ 166 = 2.102409638554217
2.102409638554217 x 100 = 210.24%