-74.55% is the change from 672 to 171
Calculation steps:
[( 171 - 672 ) ÷ 672] x 100 = -74.55%
Formula
Percentage change = [(171 - 672) / 672] x 100
Subtract the new number by the original number
171 - 672 = -501
-501 ÷ 672 = -0.7455357142857143
-0.7455357142857143 x 100 = -74.55%