-99.39% is the change from 657 to 4
Calculation steps:
[( 4 - 657 ) ÷ 657] x 100 = -99.39%
Formula
Percentage change = [(4 - 657) / 657] x 100
Subtract the new number by the original number
4 - 657 = -653
-653 ÷ 657 = -0.9939117199391172
-0.9939117199391172 x 100 = -99.39%