-32.79% is the change from 671 to 451
Calculation steps:
[( 451 - 671 ) ÷ 671] x 100 = -32.79%
Formula
Percentage change = [(451 - 671) / 671] x 100
Subtract the new number by the original number
451 - 671 = -220
-220 ÷ 671 = -0.32786885245901637
-0.32786885245901637 x 100 = -32.79%