-47.64% is the change from 657 to 344
Calculation steps:
[( 344 - 657 ) ÷ 657] x 100 = -47.64%
Formula
Percentage change = [(344 - 657) / 657] x 100
Subtract the new number by the original number
344 - 657 = -313
-313 ÷ 657 = -0.4764079147640791
-0.4764079147640791 x 100 = -47.64%