50.49% is the change from 305 to 459
Calculation steps:
[( 459 - 305 ) ÷ 305] x 100 = 50.49%
Formula
Percentage change = [(459 - 305) / 305] x 100
Subtract the new number by the original number
459 - 305 = 154
154 ÷ 305 = 0.5049180327868853
0.5049180327868853 x 100 = 50.49%