528.79% is the change from 66 to 415
Calculation steps:
[( 415 - 66 ) ÷ 66] x 100 = 528.79%
Formula
Percentage change = [(415 - 66) / 66] x 100
Subtract the new number by the original number
415 - 66 = 349
349 ÷ 66 = 5.287878787878788
5.287878787878788 x 100 = 528.79%