-75.56% is the change from 671 to 164
Calculation steps:
[( 164 - 671 ) ÷ 671] x 100 = -75.56%
Formula
Percentage change = [(164 - 671) / 671] x 100
Subtract the new number by the original number
164 - 671 = -507
-507 ÷ 671 = -0.7555886736214605
-0.7555886736214605 x 100 = -75.56%