21.15% is the change from 454 to 550
Calculation steps:
[( 550 - 454 ) ÷ 454] x 100 = 21.15%
Formula
Percentage change = [(550 - 454) / 454] x 100
Subtract the new number by the original number
550 - 454 = 96
96 ÷ 454 = 0.21145374449339208
0.21145374449339208 x 100 = 21.15%