-79.37% is the change from 378 to 78
Calculation steps:
[( 78 - 378 ) ÷ 378] x 100 = -79.37%
Formula
Percentage change = [(78 - 378) / 378] x 100
Subtract the new number by the original number
78 - 378 = -300
-300 ÷ 378 = -0.7936507936507936
-0.7936507936507936 x 100 = -79.37%