160% is the change from 90 to 234
Calculation steps:
[( 234 - 90 ) ÷ 90] x 100 = 160%
Formula
Percentage change = [(234 - 90) / 90] x 100
Subtract the new number by the original number
234 - 90 = 144
144 ÷ 90 = 1.6
1.6 x 100 = 160%
Example