15.13% is the change from 800 to 921
Calculation steps:
[( 921 - 800 ) ÷ 800] x 100 = 15.13%
Formula
Percentage change = [(921 - 800) / 800] x 100
Subtract the new number by the original number
921 - 800 = 121
121 ÷ 800 = 0.15125
0.15125 x 100 = 15.13%