757.58% is the change from 66 to 566
Calculation steps:
[( 566 - 66 ) ÷ 66] x 100 = 757.58%
Formula
Percentage change = [(566 - 66) / 66] x 100
Subtract the new number by the original number
566 - 66 = 500
500 ÷ 66 = 7.575757575757576
7.575757575757576 x 100 = 757.58%