-95.68% is the change from 671 to 29
Calculation steps:
[( 29 - 671 ) ÷ 671] x 100 = -95.68%
Formula
Percentage change = [(29 - 671) / 671] x 100
Subtract the new number by the original number
29 - 671 = -642
-642 ÷ 671 = -0.9567809239940388
-0.9567809239940388 x 100 = -95.68%