-71.73% is the change from 612 to 173
Calculation steps:
[( 173 - 612 ) ÷ 612] x 100 = -71.73%
Formula
Percentage change = [(173 - 612) / 612] x 100
Subtract the new number by the original number
173 - 612 = -439
-439 ÷ 612 = -0.7173202614379085
-0.7173202614379085 x 100 = -71.73%