-22.53% is the change from 657 to 509
Calculation steps:
[( 509 - 657 ) ÷ 657] x 100 = -22.53%
Formula
Percentage change = [(509 - 657) / 657] x 100
Subtract the new number by the original number
509 - 657 = -148
-148 ÷ 657 = -0.2252663622526636
-0.2252663622526636 x 100 = -22.53%