-41.61% is the change from 870 to 508
Calculation steps:
[( 508 - 870 ) ÷ 870] x 100 = -41.61%
Formula
Percentage change = [(508 - 870) / 870] x 100
Subtract the new number by the original number
508 - 870 = -362
-362 ÷ 870 = -0.4160919540229885
-0.4160919540229885 x 100 = -41.61%