25.72% is the change from 311 to 391
Calculation steps:
[( 391 - 311 ) ÷ 311] x 100 = 25.72%
Formula
Percentage change = [(391 - 311) / 311] x 100
Subtract the new number by the original number
391 - 311 = 80
80 ÷ 311 = 0.2572347266881029
0.2572347266881029 x 100 = 25.72%