-16.03% is the change from 655 to 550
Calculation steps:
[( 550 - 655 ) ÷ 655] x 100 = -16.03%
Formula
Percentage change = [(550 - 655) / 655] x 100
Subtract the new number by the original number
550 - 655 = -105
-105 ÷ 655 = -0.16030534351145037
-0.16030534351145037 x 100 = -16.03%