651.52% is the change from 66 to 496
Calculation steps:
[( 496 - 66 ) ÷ 66] x 100 = 651.52%
Formula
Percentage change = [(496 - 66) / 66] x 100
Subtract the new number by the original number
496 - 66 = 430
430 ÷ 66 = 6.515151515151516
6.515151515151516 x 100 = 651.52%