-55.79% is the change from 855 to 378
Calculation steps:
[( 378 - 855 ) ÷ 855] x 100 = -55.79%
Formula
Percentage change = [(378 - 855) / 855] x 100
Subtract the new number by the original number
378 - 855 = -477
-477 ÷ 855 = -0.5578947368421052
-0.5578947368421052 x 100 = -55.79%