2.11% is the change from 855 to 873
Calculation steps:
[( 873 - 855 ) ÷ 855] x 100 = 2.11%
Formula
Percentage change = [(873 - 855) / 855] x 100
Subtract the new number by the original number
873 - 855 = 18
18 ÷ 855 = 0.021052631578947368
0.021052631578947368 x 100 = 2.11%