-99.21% is the change from 378 to 3
Calculation steps:
[( 3 - 378 ) ÷ 378] x 100 = -99.21%
Formula
Percentage change = [(3 - 378) / 378] x 100
Subtract the new number by the original number
3 - 378 = -375
-375 ÷ 378 = -0.9920634920634921
-0.9920634920634921 x 100 = -99.21%