-13.89% is the change from 360 to 310
Calculation steps:
[( 310 - 360 ) ÷ 360] x 100 = -13.89%
Formula
Percentage change = [(310 - 360) / 360] x 100
Subtract the new number by the original number
310 - 360 = -50
-50 ÷ 360 = -0.1388888888888889
-0.1388888888888889 x 100 = -13.89%