-72.14% is the change from 621 to 173
Calculation steps:
[( 173 - 621 ) ÷ 621] x 100 = -72.14%
Formula
Percentage change = [(173 - 621) / 621] x 100
Subtract the new number by the original number
173 - 621 = -448
-448 ÷ 621 = -0.7214170692431562
-0.7214170692431562 x 100 = -72.14%