6.88% is the change from 814 to 870
Calculation steps:
[( 870 - 814 ) ÷ 814] x 100 = 6.88%
Formula
Percentage change = [(870 - 814) / 814] x 100
Subtract the new number by the original number
870 - 814 = 56
56 ÷ 814 = 0.0687960687960688
0.0687960687960688 x 100 = 6.88%