-45.4% is the change from 870 to 475
Calculation steps:
[( 475 - 870 ) ÷ 870] x 100 = -45.4%
Formula
Percentage change = [(475 - 870) / 870] x 100
Subtract the new number by the original number
475 - 870 = -395
-395 ÷ 870 = -0.4540229885057471
-0.4540229885057471 x 100 = -45.4%