-21.61% is the change from 657 to 515
Calculation steps:
[( 515 - 657 ) ÷ 657] x 100 = -21.61%
Formula
Percentage change = [(515 - 657) / 657] x 100
Subtract the new number by the original number
515 - 657 = -142
-142 ÷ 657 = -0.2161339421613394
-0.2161339421613394 x 100 = -21.61%