43% is the change from 307 to 439
Calculation steps:
[( 439 - 307 ) ÷ 307] x 100 = 43%
Formula
Percentage change = [(439 - 307) / 307] x 100
Subtract the new number by the original number
439 - 307 = 132
132 ÷ 307 = 0.42996742671009774
0.42996742671009774 x 100 = 43%