30.62% is the change from 307 to 401
Calculation steps:
[( 401 - 307 ) ÷ 307] x 100 = 30.62%
Formula
Percentage change = [(401 - 307) / 307] x 100
Subtract the new number by the original number
401 - 307 = 94
94 ÷ 307 = 0.30618892508143325
0.30618892508143325 x 100 = 30.62%