0.12% is the change from 869 to 870
Calculation steps:
[( 870 - 869 ) ÷ 869] x 100 = 0.12%
Formula
Percentage change = [(870 - 869) / 869] x 100
Subtract the new number by the original number
870 - 869 = 1
1 ÷ 869 = 0.0011507479861910242
0.0011507479861910242 x 100 = 0.12%