-74.14% is the change from 870 to 225
Calculation steps:
[( 225 - 870 ) ÷ 870] x 100 = -74.14%
Formula
Percentage change = [(225 - 870) / 870] x 100
Subtract the new number by the original number
225 - 870 = -645
-645 ÷ 870 = -0.7413793103448276
-0.7413793103448276 x 100 = -74.14%