-78.84% is the change from 378 to 80
Calculation steps:
[( 80 - 378 ) ÷ 378] x 100 = -78.84%
Formula
Percentage change = [(80 - 378) / 378] x 100
Subtract the new number by the original number
80 - 378 = -298
-298 ÷ 378 = -0.7883597883597884
-0.7883597883597884 x 100 = -78.84%