-47.49% is the change from 657 to 345
Calculation steps:
[( 345 - 657 ) ÷ 657] x 100 = -47.49%
Formula
Percentage change = [(345 - 657) / 657] x 100
Subtract the new number by the original number
345 - 657 = -312
-312 ÷ 657 = -0.4748858447488584
-0.4748858447488584 x 100 = -47.49%