2.12% is the change from 851 to 869
Calculation steps:
[( 869 - 851 ) ÷ 851] x 100 = 2.12%
Formula
Percentage change = [(869 - 851) / 851] x 100
Subtract the new number by the original number
869 - 851 = 18
18 ÷ 851 = 0.021151586368977675
0.021151586368977675 x 100 = 2.12%