-53.79% is the change from 870 to 402
Calculation steps:
[( 402 - 870 ) ÷ 870] x 100 = -53.79%
Formula
Percentage change = [(402 - 870) / 870] x 100
Subtract the new number by the original number
402 - 870 = -468
-468 ÷ 870 = -0.5379310344827586
-0.5379310344827586 x 100 = -53.79%