-36.96% is the change from 671 to 423
Calculation steps:
[( 423 - 671 ) ÷ 671] x 100 = -36.96%
Formula
Percentage change = [(423 - 671) / 671] x 100
Subtract the new number by the original number
423 - 671 = -248
-248 ÷ 671 = -0.36959761549925485
-0.36959761549925485 x 100 = -36.96%