-5.56% is the change from 360 to 340
Calculation steps:
[( 340 - 360 ) ÷ 360] x 100 = -5.56%
Formula
Percentage change = [(340 - 360) / 360] x 100
Subtract the new number by the original number
340 - 360 = -20
-20 ÷ 360 = -0.05555555555555555
-0.05555555555555555 x 100 = -5.56%