672.09% is the change from 86 to 664
Calculation steps:
[( 664 - 86 ) ÷ 86] x 100 = 672.09%
Formula
Percentage change = [(664 - 86) / 86] x 100
Subtract the new number by the original number
664 - 86 = 578
578 ÷ 86 = 6.72093023255814
6.72093023255814 x 100 = 672.09%