-12.76% is the change from 392 to 342
Calculation steps:
[( 342 - 392 ) ÷ 392] x 100 = -12.76%
Formula
Percentage change = [(342 - 392) / 392] x 100
Subtract the new number by the original number
342 - 392 = -50
-50 ÷ 392 = -0.12755102040816327
-0.12755102040816327 x 100 = -12.76%