4.81% is the change from 811 to 850
Calculation steps:
[( 850 - 811 ) ÷ 811] x 100 = 4.81%
Formula
Percentage change = [(850 - 811) / 811] x 100
Subtract the new number by the original number
850 - 811 = 39
39 ÷ 811 = 0.04808877928483354
0.04808877928483354 x 100 = 4.81%