-41.61% is the change from 942 to 550
Calculation steps:
[( 550 - 942 ) ÷ 942] x 100 = -41.61%
Formula
Percentage change = [(550 - 942) / 942] x 100
Subtract the new number by the original number
550 - 942 = -392
-392 ÷ 942 = -0.416135881104034
-0.416135881104034 x 100 = -41.61%