-20.69% is the change from 87 to 69
Calculation steps:
[( 69 - 87 ) ÷ 87] x 100 = -20.69%
Formula
Percentage change = [(69 - 87) / 87] x 100
Subtract the new number by the original number
69 - 87 = -18
-18 ÷ 87 = -0.20689655172413793
-0.20689655172413793 x 100 = -20.69%