-35.62% is the change from 657 to 423
Calculation steps:
[( 423 - 657 ) ÷ 657] x 100 = -35.62%
Formula
Percentage change = [(423 - 657) / 657] x 100
Subtract the new number by the original number
423 - 657 = -234
-234 ÷ 657 = -0.3561643835616438
-0.3561643835616438 x 100 = -35.62%