1.55% is the change from 837 to 850
Calculation steps:
[( 850 - 837 ) ÷ 837] x 100 = 1.55%
Formula
Percentage change = [(850 - 837) / 837] x 100
Subtract the new number by the original number
850 - 837 = 13
13 ÷ 837 = 0.015531660692951015
0.015531660692951015 x 100 = 1.55%