30.36% is the change from 550 to 717
Calculation steps:
[( 717 - 550 ) ÷ 550] x 100 = 30.36%
Formula
Percentage change = [(717 - 550) / 550] x 100
Subtract the new number by the original number
717 - 550 = 167
167 ÷ 550 = 0.30363636363636365
0.30363636363636365 x 100 = 30.36%