-9.39% is the change from 607 to 550
Calculation steps:
[( 550 - 607 ) ÷ 607] x 100 = -9.39%
Formula
Percentage change = [(550 - 607) / 607] x 100
Subtract the new number by the original number
550 - 607 = -57
-57 ÷ 607 = -0.09390444810543658
-0.09390444810543658 x 100 = -9.39%