-18.38% is the change from 419 to 342
Calculation steps:
[( 342 - 419 ) ÷ 419] x 100 = -18.38%
Formula
Percentage change = [(342 - 419) / 419] x 100
Subtract the new number by the original number
342 - 419 = -77
-77 ÷ 419 = -0.18377088305489261
-0.18377088305489261 x 100 = -18.38%