-53.1% is the change from 870 to 408
Calculation steps:
[( 408 - 870 ) ÷ 870] x 100 = -53.1%
Formula
Percentage change = [(408 - 870) / 870] x 100
Subtract the new number by the original number
408 - 870 = -462
-462 ÷ 870 = -0.5310344827586206
-0.5310344827586206 x 100 = -53.1%