-35.32% is the change from 671 to 434
Calculation steps:
[( 434 - 671 ) ÷ 671] x 100 = -35.32%
Formula
Percentage change = [(434 - 671) / 671] x 100
Subtract the new number by the original number
434 - 671 = -237
-237 ÷ 671 = -0.353204172876304
-0.353204172876304 x 100 = -35.32%