-78.95% is the change from 380 to 80
Calculation steps:
[( 80 - 380 ) ÷ 380] x 100 = -78.95%
Formula
Percentage change = [(80 - 380) / 380] x 100
Subtract the new number by the original number
80 - 380 = -300
-300 ÷ 380 = -0.7894736842105263
-0.7894736842105263 x 100 = -78.95%