7.12% is the change from 800 to 857
Calculation steps:
[( 857 - 800 ) ÷ 800] x 100 = 7.12%
Formula
Percentage change = [(857 - 800) / 800] x 100
Subtract the new number by the original number
857 - 800 = 57
57 ÷ 800 = 0.07125
0.07125 x 100 = 7.12%
Example