9.12% is the change from 340 to 371
Calculation steps:
[( 371 - 340 ) ÷ 340] x 100 = 9.12%
Formula
Percentage change = [(371 - 340) / 340] x 100
Subtract the new number by the original number
371 - 340 = 31
31 ÷ 340 = 0.09117647058823529
0.09117647058823529 x 100 = 9.12%