-30.36% is the change from 550 to 383
Calculation steps:
[( 383 - 550 ) ÷ 550] x 100 = -30.36%
Formula
Percentage change = [(383 - 550) / 550] x 100
Subtract the new number by the original number
383 - 550 = -167
-167 ÷ 550 = -0.30363636363636365
-0.30363636363636365 x 100 = -30.36%