-43.6% is the change from 899 to 507
Calculation steps:
[( 507 - 899 ) ÷ 899] x 100 = -43.6%
Formula
Percentage change = [(507 - 899) / 899] x 100
Subtract the new number by the original number
507 - 899 = -392
-392 ÷ 899 = -0.4360400444938821
-0.4360400444938821 x 100 = -43.6%