205.42% is the change from 166 to 507
Calculation steps:
[( 507 - 166 ) ÷ 166] x 100 = 205.42%
Formula
Percentage change = [(507 - 166) / 166] x 100
Subtract the new number by the original number
507 - 166 = 341
341 ÷ 166 = 2.0542168674698793
2.0542168674698793 x 100 = 205.42%