22.5% is the change from 800 to 980
Calculation steps:
[( 980 - 800 ) ÷ 800] x 100 = 22.5%
Formula
Percentage change = [(980 - 800) / 800] x 100
Subtract the new number by the original number
980 - 800 = 180
180 ÷ 800 = 0.225
0.225 x 100 = 22.5%
Example