9.9% is the change from 899 to 988
Calculation steps:
[( 988 - 899 ) ÷ 899] x 100 = 9.9%
Formula
Percentage change = [(988 - 899) / 899] x 100
Subtract the new number by the original number
988 - 899 = 89
89 ÷ 899 = 0.09899888765294772
0.09899888765294772 x 100 = 9.9%