-23.33% is the change from 90 to 69
Calculation steps:
[( 69 - 90 ) ÷ 90] x 100 = -23.33%
Formula
Percentage change = [(69 - 90) / 90] x 100
Subtract the new number by the original number
69 - 90 = -21
-21 ÷ 90 = -0.23333333333333334
-0.23333333333333334 x 100 = -23.33%