15.6% is the change from 391 to 452
Calculation steps:
[( 452 - 391 ) ÷ 391] x 100 = 15.6%
Formula
Percentage change = [(452 - 391) / 391] x 100
Subtract the new number by the original number
452 - 391 = 61
61 ÷ 391 = 0.15601023017902813
0.15601023017902813 x 100 = 15.6%