1.88% is the change from 800 to 815
Calculation steps:
[( 815 - 800 ) ÷ 800] x 100 = 1.88%
Formula
Percentage change = [(815 - 800) / 800] x 100
Subtract the new number by the original number
815 - 800 = 15
15 ÷ 800 = 0.01875
0.01875 x 100 = 1.88%
Example