-99.85% is the change from 657 to 1
Calculation steps:
[( 1 - 657 ) ÷ 657] x 100 = -99.85%
Formula
Percentage change = [(1 - 657) / 657] x 100
Subtract the new number by the original number
1 - 657 = -656
-656 ÷ 657 = -0.9984779299847792
-0.9984779299847792 x 100 = -99.85%