23.64% is the change from 550 to 680
Calculation steps:
[( 680 - 550 ) ÷ 550] x 100 = 23.64%
Formula
Percentage change = [(680 - 550) / 550] x 100
Subtract the new number by the original number
680 - 550 = 130
130 ÷ 550 = 0.23636363636363636
0.23636363636363636 x 100 = 23.64%