-81.19% is the change from 388 to 73
Calculation steps:
[( 73 - 388 ) ÷ 388] x 100 = -81.19%
Formula
Percentage change = [(73 - 388) / 388] x 100
Subtract the new number by the original number
73 - 388 = -315
-315 ÷ 388 = -0.8118556701030928
-0.8118556701030928 x 100 = -81.19%