-77.88% is the change from 330 to 73
Calculation steps:
[( 73 - 330 ) ÷ 330] x 100 = -77.88%
Formula
Percentage change = [(73 - 330) / 330] x 100
Subtract the new number by the original number
73 - 330 = -257
-257 ÷ 330 = -0.7787878787878788
-0.7787878787878788 x 100 = -77.88%