1788.89% is the change from 9 to 170
Calculation steps:
[( 170 - 9 ) ÷ 9] x 100 = 1788.89%
Formula
Percentage change = [(170 - 9) / 9] x 100
Subtract the new number by the original number
170 - 9 = 161
161 ÷ 9 = 17.88888888888889
17.88888888888889 x 100 = 1788.89%