754.55% is the change from 66 to 564
Calculation steps:
[( 564 - 66 ) ÷ 66] x 100 = 754.55%
Formula
Percentage change = [(564 - 66) / 66] x 100
Subtract the new number by the original number
564 - 66 = 498
498 ÷ 66 = 7.545454545454546
7.545454545454546 x 100 = 754.55%