25.15% is the change from 684 to 856
Calculation steps:
[( 856 - 684 ) ÷ 684] x 100 = 25.15%
Formula
Percentage change = [(856 - 684) / 684] x 100
Subtract the new number by the original number
856 - 684 = 172
172 ÷ 684 = 0.25146198830409355
0.25146198830409355 x 100 = 25.15%