692.42% is the change from 66 to 523
Calculation steps:
[( 523 - 66 ) ÷ 66] x 100 = 692.42%
Formula
Percentage change = [(523 - 66) / 66] x 100
Subtract the new number by the original number
523 - 66 = 457
457 ÷ 66 = 6.924242424242424
6.924242424242424 x 100 = 692.42%