-50.91% is the change from 931 to 457
Calculation steps:
[( 457 - 931 ) ÷ 931] x 100 = -50.91%
Formula
Percentage change = [(457 - 931) / 931] x 100
Subtract the new number by the original number
457 - 931 = -474
-474 ÷ 931 = -0.5091299677765844
-0.5091299677765844 x 100 = -50.91%