3007.14% is the change from 28 to 870
Calculation steps:
[( 870 - 28 ) ÷ 28] x 100 = 3007.14%
Formula
Percentage change = [(870 - 28) / 28] x 100
Subtract the new number by the original number
870 - 28 = 842
842 ÷ 28 = 30.071428571428573
30.071428571428573 x 100 = 3007.14%