35.37% is the change from 311 to 421
Calculation steps:
[( 421 - 311 ) ÷ 311] x 100 = 35.37%
Formula
Percentage change = [(421 - 311) / 311] x 100
Subtract the new number by the original number
421 - 311 = 110
110 ÷ 311 = 0.3536977491961415
0.3536977491961415 x 100 = 35.37%