-65.25% is the change from 259 to 90
Calculation steps:
[( 90 - 259 ) ÷ 259] x 100 = -65.25%
Formula
Percentage change = [(90 - 259) / 259] x 100
Subtract the new number by the original number
90 - 259 = -169
-169 ÷ 259 = -0.6525096525096525
-0.6525096525096525 x 100 = -65.25%