-37.09% is the change from 550 to 346
Calculation steps:
[( 346 - 550 ) ÷ 550] x 100 = -37.09%
Formula
Percentage change = [(346 - 550) / 550] x 100
Subtract the new number by the original number
346 - 550 = -204
-204 ÷ 550 = -0.3709090909090909
-0.3709090909090909 x 100 = -37.09%