187.78% is the change from 90 to 259
Calculation steps:
[( 259 - 90 ) ÷ 90] x 100 = 187.78%
Formula
Percentage change = [(259 - 90) / 90] x 100
Subtract the new number by the original number
259 - 90 = 169
169 ÷ 90 = 1.8777777777777778
1.8777777777777778 x 100 = 187.78%