-80.35% is the change from 397 to 78
Calculation steps:
[( 78 - 397 ) ÷ 397] x 100 = -80.35%
Formula
Percentage change = [(78 - 397) / 397] x 100
Subtract the new number by the original number
78 - 397 = -319
-319 ÷ 397 = -0.8035264483627204
-0.8035264483627204 x 100 = -80.35%