12.53% is the change from 391 to 440
Calculation steps:
[( 440 - 391 ) ÷ 391] x 100 = 12.53%
Formula
Percentage change = [(440 - 391) / 391] x 100
Subtract the new number by the original number
440 - 391 = 49
49 ÷ 391 = 0.12531969309462915
0.12531969309462915 x 100 = 12.53%