-99.85% is the change from 677 to 1
Calculation steps:
[( 1 - 677 ) ÷ 677] x 100 = -99.85%
Formula
Percentage change = [(1 - 677) / 677] x 100
Subtract the new number by the original number
1 - 677 = -676
-676 ÷ 677 = -0.9985228951255539
-0.9985228951255539 x 100 = -99.85%