20.72% is the change from 391 to 472
Calculation steps:
[( 472 - 391 ) ÷ 391] x 100 = 20.72%
Formula
Percentage change = [(472 - 391) / 391] x 100
Subtract the new number by the original number
472 - 391 = 81
81 ÷ 391 = 0.2071611253196931
0.2071611253196931 x 100 = 20.72%