-17.11% is the change from 456 to 378
Calculation steps:
[( 378 - 456 ) ÷ 456] x 100 = -17.11%
Formula
Percentage change = [(378 - 456) / 456] x 100
Subtract the new number by the original number
378 - 456 = -78
-78 ÷ 456 = -0.17105263157894737
-0.17105263157894737 x 100 = -17.11%