39.2% is the change from 324 to 451
Calculation steps:
[( 451 - 324 ) ÷ 324] x 100 = 39.2%
Formula
Percentage change = [(451 - 324) / 324] x 100
Subtract the new number by the original number
451 - 324 = 127
127 ÷ 324 = 0.39197530864197533
0.39197530864197533 x 100 = 39.2%