8.89% is the change from 900 to 980
Calculation steps:
[( 980 - 900 ) ÷ 900] x 100 = 8.89%
Formula
Percentage change = [(980 - 900) / 900] x 100
Subtract the new number by the original number
980 - 900 = 80
80 ÷ 900 = 0.08888888888888889
0.08888888888888889 x 100 = 8.89%