-95.94% is the change from 665 to 27
Calculation steps:
[( 27 - 665 ) ÷ 665] x 100 = -95.94%
Formula
Percentage change = [(27 - 665) / 665] x 100
Subtract the new number by the original number
27 - 665 = -638
-638 ÷ 665 = -0.9593984962406015
-0.9593984962406015 x 100 = -95.94%