21.41% is the change from 355 to 431
Calculation steps:
[( 431 - 355 ) ÷ 355] x 100 = 21.41%
Formula
Percentage change = [(431 - 355) / 355] x 100
Subtract the new number by the original number
431 - 355 = 76
76 ÷ 355 = 0.2140845070422535
0.2140845070422535 x 100 = 21.41%