-15.97% is the change from 407 to 342
Calculation steps:
[( 342 - 407 ) ÷ 407] x 100 = -15.97%
Formula
Percentage change = [(342 - 407) / 407] x 100
Subtract the new number by the original number
342 - 407 = -65
-65 ÷ 407 = -0.1597051597051597
-0.1597051597051597 x 100 = -15.97%