51.33% is the change from 300 to 454
Calculation steps:
[( 454 - 300 ) ÷ 300] x 100 = 51.33%
Formula
Percentage change = [(454 - 300) / 300] x 100
Subtract the new number by the original number
454 - 300 = 154
154 ÷ 300 = 0.5133333333333333
0.5133333333333333 x 100 = 51.33%