37.62% is the change from 311 to 428
Calculation steps:
[( 428 - 311 ) ÷ 311] x 100 = 37.62%
Formula
Percentage change = [(428 - 311) / 311] x 100
Subtract the new number by the original number
428 - 311 = 117
117 ÷ 311 = 0.3762057877813505
0.3762057877813505 x 100 = 37.62%