2.15% is the change from 837 to 855
Calculation steps:
[( 855 - 837 ) ÷ 837] x 100 = 2.15%
Formula
Percentage change = [(855 - 837) / 837] x 100
Subtract the new number by the original number
855 - 837 = 18
18 ÷ 837 = 0.021505376344086023
0.021505376344086023 x 100 = 2.15%