-97.62% is the change from 378 to 9
Calculation steps:
[( 9 - 378 ) ÷ 378] x 100 = -97.62%
Formula
Percentage change = [(9 - 378) / 378] x 100
Subtract the new number by the original number
9 - 378 = -369
-369 ÷ 378 = -0.9761904761904762
-0.9761904761904762 x 100 = -97.62%