3.38% is the change from 800 to 827
Calculation steps:
[( 827 - 800 ) ÷ 800] x 100 = 3.38%
Formula
Percentage change = [(827 - 800) / 800] x 100
Subtract the new number by the original number
827 - 800 = 27
27 ÷ 800 = 0.03375
0.03375 x 100 = 3.38%
Example