-32.17% is the change from 457 to 310
Calculation steps:
[( 310 - 457 ) ÷ 457] x 100 = -32.17%
Formula
Percentage change = [(310 - 457) / 457] x 100
Subtract the new number by the original number
310 - 457 = -147
-147 ÷ 457 = -0.32166301969365424
-0.32166301969365424 x 100 = -32.17%