11.25% is the change from 800 to 890
Calculation steps:
[( 890 - 800 ) ÷ 800] x 100 = 11.25%
Formula
Percentage change = [(890 - 800) / 800] x 100
Subtract the new number by the original number
890 - 800 = 90
90 ÷ 800 = 0.1125
0.1125 x 100 = 11.25%
Example