-35.63% is the change from 870 to 560
Calculation steps:
[( 560 - 870 ) ÷ 870] x 100 = -35.63%
Formula
Percentage change = [(560 - 870) / 870] x 100
Subtract the new number by the original number
560 - 870 = -310
-310 ÷ 870 = -0.3563218390804598
-0.3563218390804598 x 100 = -35.63%