6.78% is the change from 457 to 488
Calculation steps:
[( 488 - 457 ) ÷ 457] x 100 = 6.78%
Formula
Percentage change = [(488 - 457) / 457] x 100
Subtract the new number by the original number
488 - 457 = 31
31 ÷ 457 = 0.06783369803063458
0.06783369803063458 x 100 = 6.78%