-53.17% is the change from 899 to 421
Calculation steps:
[( 421 - 899 ) ÷ 899] x 100 = -53.17%
Formula
Percentage change = [(421 - 899) / 899] x 100
Subtract the new number by the original number
421 - 899 = -478
-478 ÷ 899 = -0.5317018909899889
-0.5317018909899889 x 100 = -53.17%