204.22% is the change from 166 to 505
Calculation steps:
[( 505 - 166 ) ÷ 166] x 100 = 204.22%
Formula
Percentage change = [(505 - 166) / 166] x 100
Subtract the new number by the original number
505 - 166 = 339
339 ÷ 166 = 2.0421686746987953
2.0421686746987953 x 100 = 204.22%