9790% is the change from 10 to 989
Calculation steps:
[( 989 - 10 ) ÷ 10] x 100 = 9790%
Formula
Percentage change = [(989 - 10) / 10] x 100
Subtract the new number by the original number
989 - 10 = 979
979 ÷ 10 = 97.9
97.9 x 100 = 9790%
Example