16.37% is the change from 336 to 391
Calculation steps:
[( 391 - 336 ) ÷ 336] x 100 = 16.37%
Formula
Percentage change = [(391 - 336) / 336] x 100
Subtract the new number by the original number
391 - 336 = 55
55 ÷ 336 = 0.1636904761904762
0.1636904761904762 x 100 = 16.37%