47.8% is the change from 454 to 671
Calculation steps:
[( 671 - 454 ) ÷ 454] x 100 = 47.8%
Formula
Percentage change = [(671 - 454) / 454] x 100
Subtract the new number by the original number
671 - 454 = 217
217 ÷ 454 = 0.4779735682819383
0.4779735682819383 x 100 = 47.8%