-39.69% is the change from 912 to 550
Calculation steps:
[( 550 - 912 ) ÷ 912] x 100 = -39.69%
Formula
Percentage change = [(550 - 912) / 912] x 100
Subtract the new number by the original number
550 - 912 = -362
-362 ÷ 912 = -0.3969298245614035
-0.3969298245614035 x 100 = -39.69%