34.23% is the change from 336 to 451
Calculation steps:
[( 451 - 336 ) ÷ 336] x 100 = 34.23%
Formula
Percentage change = [(451 - 336) / 336] x 100
Subtract the new number by the original number
451 - 336 = 115
115 ÷ 336 = 0.34226190476190477
0.34226190476190477 x 100 = 34.23%