-99.45% is the change from 550 to 3
Calculation steps:
[( 3 - 550 ) ÷ 550] x 100 = -99.45%
Formula
Percentage change = [(3 - 550) / 550] x 100
Subtract the new number by the original number
3 - 550 = -547
-547 ÷ 550 = -0.9945454545454545
-0.9945454545454545 x 100 = -99.45%