-0.59% is the change from 340 to 338
Calculation steps:
[( 338 - 340 ) ÷ 340] x 100 = -0.59%
Formula
Percentage change = [(338 - 340) / 340] x 100
Subtract the new number by the original number
338 - 340 = -2
-2 ÷ 340 = -0.0058823529411764705
-0.0058823529411764705 x 100 = -0.59%