-55.09% is the change from 550 to 247
Calculation steps:
[( 247 - 550 ) ÷ 550] x 100 = -55.09%
Formula
Percentage change = [(247 - 550) / 550] x 100
Subtract the new number by the original number
247 - 550 = -303
-303 ÷ 550 = -0.5509090909090909
-0.5509090909090909 x 100 = -55.09%