50.33% is the change from 451 to 678
Calculation steps:
[( 678 - 451 ) ÷ 451] x 100 = 50.33%
Formula
Percentage change = [(678 - 451) / 451] x 100
Subtract the new number by the original number
678 - 451 = 227
227 ÷ 451 = 0.5033259423503326
0.5033259423503326 x 100 = 50.33%