-61.09% is the change from 550 to 214
Calculation steps:
[( 214 - 550 ) ÷ 550] x 100 = -61.09%
Formula
Percentage change = [(214 - 550) / 550] x 100
Subtract the new number by the original number
214 - 550 = -336
-336 ÷ 550 = -0.610909090909091
-0.610909090909091 x 100 = -61.09%