48.85% is the change from 305 to 454
Calculation steps:
[( 454 - 305 ) ÷ 305] x 100 = 48.85%
Formula
Percentage change = [(454 - 305) / 305] x 100
Subtract the new number by the original number
454 - 305 = 149
149 ÷ 305 = 0.4885245901639344
0.4885245901639344 x 100 = 48.85%