-76.07% is the change from 305 to 73
Calculation steps:
[( 73 - 305 ) ÷ 305] x 100 = -76.07%
Formula
Percentage change = [(73 - 305) / 305] x 100
Subtract the new number by the original number
73 - 305 = -232
-232 ÷ 305 = -0.760655737704918
-0.760655737704918 x 100 = -76.07%