-87.3% is the change from 378 to 48
Calculation steps:
[( 48 - 378 ) ÷ 378] x 100 = -87.3%
Formula
Percentage change = [(48 - 378) / 378] x 100
Subtract the new number by the original number
48 - 378 = -330
-330 ÷ 378 = -0.873015873015873
-0.873015873015873 x 100 = -87.3%