-95.98% is the change from 671 to 27
Calculation steps:
[( 27 - 671 ) ÷ 671] x 100 = -95.98%
Formula
Percentage change = [(27 - 671) / 671] x 100
Subtract the new number by the original number
27 - 671 = -644
-644 ÷ 671 = -0.9597615499254843
-0.9597615499254843 x 100 = -95.98%