48.56% is the change from 451 to 670
Calculation steps:
[( 670 - 451 ) ÷ 451] x 100 = 48.56%
Formula
Percentage change = [(670 - 451) / 451] x 100
Subtract the new number by the original number
670 - 451 = 219
219 ÷ 451 = 0.48558758314855877
0.48558758314855877 x 100 = 48.56%