28900% is the change from 3 to 870
Calculation steps:
[( 870 - 3 ) ÷ 3] x 100 = 28900%
Formula
Percentage change = [(870 - 3) / 3] x 100
Subtract the new number by the original number
870 - 3 = 867
867 ÷ 3 = 289
289 x 100 = 28900%
Example