-50.7% is the change from 927 to 457
Calculation steps:
[( 457 - 927 ) ÷ 927] x 100 = -50.7%
Formula
Percentage change = [(457 - 927) / 927] x 100
Subtract the new number by the original number
457 - 927 = -470
-470 ÷ 927 = -0.5070118662351673
-0.5070118662351673 x 100 = -50.7%