-74.83% is the change from 870 to 219
Calculation steps:
[( 219 - 870 ) ÷ 870] x 100 = -74.83%
Formula
Percentage change = [(219 - 870) / 870] x 100
Subtract the new number by the original number
219 - 870 = -651
-651 ÷ 870 = -0.7482758620689656
-0.7482758620689656 x 100 = -74.83%