49% is the change from 451 to 672
Calculation steps:
[( 672 - 451 ) ÷ 451] x 100 = 49%
Formula
Percentage change = [(672 - 451) / 451] x 100
Subtract the new number by the original number
672 - 451 = 221
221 ÷ 451 = 0.49002217294900224
0.49002217294900224 x 100 = 49%