-92.18% is the change from 550 to 43
Calculation steps:
[( 43 - 550 ) ÷ 550] x 100 = -92.18%
Formula
Percentage change = [(43 - 550) / 550] x 100
Subtract the new number by the original number
43 - 550 = -507
-507 ÷ 550 = -0.9218181818181819
-0.9218181818181819 x 100 = -92.18%