8.33% is the change from 360 to 390
Calculation steps:
[( 390 - 360 ) ÷ 360] x 100 = 8.33%
Formula
Percentage change = [(390 - 360) / 360] x 100
Subtract the new number by the original number
390 - 360 = 30
30 ÷ 360 = 0.08333333333333333
0.08333333333333333 x 100 = 8.33%