-19.1% is the change from 487 to 394
Calculation steps:
[( 394 - 487 ) ÷ 487] x 100 = -19.1%
Formula
Percentage change = [(394 - 487) / 487] x 100
Subtract the new number by the original number
394 - 487 = -93
-93 ÷ 487 = -0.19096509240246407
-0.19096509240246407 x 100 = -19.1%