-86.69% is the change from 676 to 90
Calculation steps:
[( 90 - 676 ) ÷ 676] x 100 = -86.69%
Formula
Percentage change = [(90 - 676) / 676] x 100
Subtract the new number by the original number
90 - 676 = -586
-586 ÷ 676 = -0.8668639053254438
-0.8668639053254438 x 100 = -86.69%