-34.68% is the change from 842 to 550
Calculation steps:
[( 550 - 842 ) ÷ 842] x 100 = -34.68%
Formula
Percentage change = [(550 - 842) / 842] x 100
Subtract the new number by the original number
550 - 842 = -292
-292 ÷ 842 = -0.34679334916864607
-0.34679334916864607 x 100 = -34.68%