-68.75% is the change from 288 to 90
Calculation steps:
[( 90 - 288 ) ÷ 288] x 100 = -68.75%
Formula
Percentage change = [(90 - 288) / 288] x 100
Subtract the new number by the original number
90 - 288 = -198
-198 ÷ 288 = -0.6875
-0.6875 x 100 = -68.75%