41.94% is the change from 310 to 440
Calculation steps:
[( 440 - 310 ) ÷ 310] x 100 = 41.94%
Formula
Percentage change = [(440 - 310) / 310] x 100
Subtract the new number by the original number
440 - 310 = 130
130 ÷ 310 = 0.41935483870967744
0.41935483870967744 x 100 = 41.94%