-30.59% is the change from 657 to 456
Calculation steps:
[( 456 - 657 ) ÷ 657] x 100 = -30.59%
Formula
Percentage change = [(456 - 657) / 657] x 100
Subtract the new number by the original number
456 - 657 = -201
-201 ÷ 657 = -0.3059360730593607
-0.3059360730593607 x 100 = -30.59%