-73.47% is the change from 671 to 178
Calculation steps:
[( 178 - 671 ) ÷ 671] x 100 = -73.47%
Formula
Percentage change = [(178 - 671) / 671] x 100
Subtract the new number by the original number
178 - 671 = -493
-493 ÷ 671 = -0.7347242921013413
-0.7347242921013413 x 100 = -73.47%