10.34% is the change from 870 to 960
Calculation steps:
[( 960 - 870 ) ÷ 870] x 100 = 10.34%
Formula
Percentage change = [(960 - 870) / 870] x 100
Subtract the new number by the original number
960 - 870 = 90
90 ÷ 870 = 0.10344827586206896
0.10344827586206896 x 100 = 10.34%