-74.03% is the change from 308 to 80
Calculation steps:
[( 80 - 308 ) ÷ 308] x 100 = -74.03%
Formula
Percentage change = [(80 - 308) / 308] x 100
Subtract the new number by the original number
80 - 308 = -228
-228 ÷ 308 = -0.7402597402597403
-0.7402597402597403 x 100 = -74.03%