21.66% is the change from 457 to 556
Calculation steps:
[( 556 - 457 ) ÷ 457] x 100 = 21.66%
Formula
Percentage change = [(556 - 457) / 457] x 100
Subtract the new number by the original number
556 - 457 = 99
99 ÷ 457 = 0.21663019693654267
0.21663019693654267 x 100 = 21.66%