-42.91% is the change from 550 to 314
Calculation steps:
[( 314 - 550 ) ÷ 550] x 100 = -42.91%
Formula
Percentage change = [(314 - 550) / 550] x 100
Subtract the new number by the original number
314 - 550 = -236
-236 ÷ 550 = -0.4290909090909091
-0.4290909090909091 x 100 = -42.91%