2.52% is the change from 834 to 855
Calculation steps:
[( 855 - 834 ) ÷ 834] x 100 = 2.52%
Formula
Percentage change = [(855 - 834) / 834] x 100
Subtract the new number by the original number
855 - 834 = 21
21 ÷ 834 = 0.025179856115107913
0.025179856115107913 x 100 = 2.52%