2% is the change from 550 to 561
Calculation steps:
[( 561 - 550 ) ÷ 550] x 100 = 2%
Formula
Percentage change = [(561 - 550) / 550] x 100
Subtract the new number by the original number
561 - 550 = 11
11 ÷ 550 = 0.02
0.02 x 100 = 2%
Example