2.96% is the change from 845 to 870
Calculation steps:
[( 870 - 845 ) ÷ 845] x 100 = 2.96%
Formula
Percentage change = [(870 - 845) / 845] x 100
Subtract the new number by the original number
870 - 845 = 25
25 ÷ 845 = 0.029585798816568046
0.029585798816568046 x 100 = 2.96%