-2.99% is the change from 402 to 390
Calculation steps:
[( 390 - 402 ) ÷ 402] x 100 = -2.99%
Formula
Percentage change = [(390 - 402) / 402] x 100
Subtract the new number by the original number
390 - 402 = -12
-12 ÷ 402 = -0.029850746268656716
-0.029850746268656716 x 100 = -2.99%