-98.23% is the change from 677 to 12
Calculation steps:
[( 12 - 677 ) ÷ 677] x 100 = -98.23%
Formula
Percentage change = [(12 - 677) / 677] x 100
Subtract the new number by the original number
12 - 677 = -665
-665 ÷ 677 = -0.982274741506647
-0.982274741506647 x 100 = -98.23%