-32.5% is the change from 677 to 457
Calculation steps:
[( 457 - 677 ) ÷ 677] x 100 = -32.5%
Formula
Percentage change = [(457 - 677) / 677] x 100
Subtract the new number by the original number
457 - 677 = -220
-220 ÷ 677 = -0.3249630723781389
-0.3249630723781389 x 100 = -32.5%