-75.52% is the change from 870 to 213
Calculation steps:
[( 213 - 870 ) ÷ 870] x 100 = -75.52%
Formula
Percentage change = [(213 - 870) / 870] x 100
Subtract the new number by the original number
213 - 870 = -657
-657 ÷ 870 = -0.7551724137931034
-0.7551724137931034 x 100 = -75.52%