-9.24% is the change from 606 to 550
Calculation steps:
[( 550 - 606 ) ÷ 606] x 100 = -9.24%
Formula
Percentage change = [(550 - 606) / 606] x 100
Subtract the new number by the original number
550 - 606 = -56
-56 ÷ 606 = -0.0924092409240924
-0.0924092409240924 x 100 = -9.24%