645.45% is the change from 66 to 492
Calculation steps:
[( 492 - 66 ) ÷ 66] x 100 = 645.45%
Formula
Percentage change = [(492 - 66) / 66] x 100
Subtract the new number by the original number
492 - 66 = 426
426 ÷ 66 = 6.454545454545454
6.454545454545454 x 100 = 645.45%