-89.87% is the change from 671 to 68
Calculation steps:
[( 68 - 671 ) ÷ 671] x 100 = -89.87%
Formula
Percentage change = [(68 - 671) / 671] x 100
Subtract the new number by the original number
68 - 671 = -603
-603 ÷ 671 = -0.8986587183308494
-0.8986587183308494 x 100 = -89.87%