654.55% is the change from 66 to 498
Calculation steps:
[( 498 - 66 ) ÷ 66] x 100 = 654.55%
Formula
Percentage change = [(498 - 66) / 66] x 100
Subtract the new number by the original number
498 - 66 = 432
432 ÷ 66 = 6.545454545454546
6.545454545454546 x 100 = 654.55%