-19.75% is the change from 471 to 378
Calculation steps:
[( 378 - 471 ) ÷ 471] x 100 = -19.75%
Formula
Percentage change = [(378 - 471) / 471] x 100
Subtract the new number by the original number
378 - 471 = -93
-93 ÷ 471 = -0.19745222929936307
-0.19745222929936307 x 100 = -19.75%