47.87% is the change from 305 to 451
Calculation steps:
[( 451 - 305 ) ÷ 305] x 100 = 47.87%
Formula
Percentage change = [(451 - 305) / 305] x 100
Subtract the new number by the original number
451 - 305 = 146
146 ÷ 305 = 0.4786885245901639
0.4786885245901639 x 100 = 47.87%