52.99% is the change from 451 to 690
Calculation steps:
[( 690 - 451 ) ÷ 451] x 100 = 52.99%
Formula
Percentage change = [(690 - 451) / 451] x 100
Subtract the new number by the original number
690 - 451 = 239
239 ÷ 451 = 0.5299334811529933
0.5299334811529933 x 100 = 52.99%