-77.81% is the change from 329 to 73
Calculation steps:
[( 73 - 329 ) ÷ 329] x 100 = -77.81%
Formula
Percentage change = [(73 - 329) / 329] x 100
Subtract the new number by the original number
73 - 329 = -256
-256 ÷ 329 = -0.7781155015197568
-0.7781155015197568 x 100 = -77.81%