690.91% is the change from 77 to 609
Calculation steps:
[( 609 - 77 ) ÷ 77] x 100 = 690.91%
Formula
Percentage change = [(609 - 77) / 77] x 100
Subtract the new number by the original number
609 - 77 = 532
532 ÷ 77 = 6.909090909090909
6.909090909090909 x 100 = 690.91%