-2.33% is the change from 344 to 336
Calculation steps:
[( 336 - 344 ) ÷ 344] x 100 = -2.33%
Formula
Percentage change = [(336 - 344) / 344] x 100
Subtract the new number by the original number
336 - 344 = -8
-8 ÷ 344 = -0.023255813953488372
-0.023255813953488372 x 100 = -2.33%