48.79% is the change from 455 to 677
Calculation steps:
[( 677 - 455 ) ÷ 455] x 100 = 48.79%
Formula
Percentage change = [(677 - 455) / 455] x 100
Subtract the new number by the original number
677 - 455 = 222
222 ÷ 455 = 0.4879120879120879
0.4879120879120879 x 100 = 48.79%