-96.03% is the change from 378 to 15
Calculation steps:
[( 15 - 378 ) ÷ 378] x 100 = -96.03%
Formula
Percentage change = [(15 - 378) / 378] x 100
Subtract the new number by the original number
15 - 378 = -363
-363 ÷ 378 = -0.9603174603174603
-0.9603174603174603 x 100 = -96.03%