13.04% is the change from 391 to 442
Calculation steps:
[( 442 - 391 ) ÷ 391] x 100 = 13.04%
Formula
Percentage change = [(442 - 391) / 391] x 100
Subtract the new number by the original number
442 - 391 = 51
51 ÷ 391 = 0.13043478260869565
0.13043478260869565 x 100 = 13.04%