-39.36% is the change from 907 to 550
Calculation steps:
[( 550 - 907 ) ÷ 907] x 100 = -39.36%
Formula
Percentage change = [(550 - 907) / 907] x 100
Subtract the new number by the original number
550 - 907 = -357
-357 ÷ 907 = -0.3936052921719956
-0.3936052921719956 x 100 = -39.36%