37.18% is the change from 312 to 428
Calculation steps:
[( 428 - 312 ) ÷ 312] x 100 = 37.18%
Formula
Percentage change = [(428 - 312) / 312] x 100
Subtract the new number by the original number
428 - 312 = 116
116 ÷ 312 = 0.3717948717948718
0.3717948717948718 x 100 = 37.18%