11.4% is the change from 351 to 391
Calculation steps:
[( 391 - 351 ) ÷ 351] x 100 = 11.4%
Formula
Percentage change = [(391 - 351) / 351] x 100
Subtract the new number by the original number
391 - 351 = 40
40 ÷ 351 = 0.11396011396011396
0.11396011396011396 x 100 = 11.4%