41.27% is the change from 550 to 777
Calculation steps:
[( 777 - 550 ) ÷ 550] x 100 = 41.27%
Formula
Percentage change = [(777 - 550) / 550] x 100
Subtract the new number by the original number
777 - 550 = 227
227 ÷ 550 = 0.4127272727272727
0.4127272727272727 x 100 = 41.27%