-90.26% is the change from 657 to 64
Calculation steps:
[( 64 - 657 ) ÷ 657] x 100 = -90.26%
Formula
Percentage change = [(64 - 657) / 657] x 100
Subtract the new number by the original number
64 - 657 = -593
-593 ÷ 657 = -0.9025875190258752
-0.9025875190258752 x 100 = -90.26%