621.21% is the change from 66 to 476
Calculation steps:
[( 476 - 66 ) ÷ 66] x 100 = 621.21%
Formula
Percentage change = [(476 - 66) / 66] x 100
Subtract the new number by the original number
476 - 66 = 410
410 ÷ 66 = 6.212121212121212
6.212121212121212 x 100 = 621.21%