29.26% is the change from 311 to 402
Calculation steps:
[( 402 - 311 ) ÷ 311] x 100 = 29.26%
Formula
Percentage change = [(402 - 311) / 311] x 100
Subtract the new number by the original number
402 - 311 = 91
91 ÷ 311 = 0.29260450160771706
0.29260450160771706 x 100 = 29.26%