48.55% is the change from 550 to 817
Calculation steps:
[( 817 - 550 ) ÷ 550] x 100 = 48.55%
Formula
Percentage change = [(817 - 550) / 550] x 100
Subtract the new number by the original number
817 - 550 = 267
267 ÷ 550 = 0.48545454545454547
0.48545454545454547 x 100 = 48.55%