0.12% is the change from 849 to 850
Calculation steps:
[( 850 - 849 ) ÷ 849] x 100 = 0.12%
Formula
Percentage change = [(850 - 849) / 849] x 100
Subtract the new number by the original number
850 - 849 = 1
1 ÷ 849 = 0.001177856301531213
0.001177856301531213 x 100 = 0.12%