765.15% is the change from 66 to 571
Calculation steps:
[( 571 - 66 ) ÷ 66] x 100 = 765.15%
Formula
Percentage change = [(571 - 66) / 66] x 100
Subtract the new number by the original number
571 - 66 = 505
505 ÷ 66 = 7.651515151515151
7.651515151515151 x 100 = 765.15%