-23.44% is the change from 657 to 503
Calculation steps:
[( 503 - 657 ) ÷ 657] x 100 = -23.44%
Formula
Percentage change = [(503 - 657) / 657] x 100
Subtract the new number by the original number
503 - 657 = -154
-154 ÷ 657 = -0.2343987823439878
-0.2343987823439878 x 100 = -23.44%