-16.08% is the change from 342 to 287
Calculation steps:
[( 287 - 342 ) ÷ 342] x 100 = -16.08%
Formula
Percentage change = [(287 - 342) / 342] x 100
Subtract the new number by the original number
287 - 342 = -55
-55 ÷ 342 = -0.1608187134502924
-0.1608187134502924 x 100 = -16.08%