41.16% is the change from 311 to 439
Calculation steps:
[( 439 - 311 ) ÷ 311] x 100 = 41.16%
Formula
Percentage change = [(439 - 311) / 311] x 100
Subtract the new number by the original number
439 - 311 = 128
128 ÷ 311 = 0.4115755627009646
0.4115755627009646 x 100 = 41.16%