-34.29% is the change from 837 to 550
Calculation steps:
[( 550 - 837 ) ÷ 837] x 100 = -34.29%
Formula
Percentage change = [(550 - 837) / 837] x 100
Subtract the new number by the original number
550 - 837 = -287
-287 ÷ 837 = -0.3428912783751493
-0.3428912783751493 x 100 = -34.29%