-45.76% is the change from 931 to 505
Calculation steps:
[( 505 - 931 ) ÷ 931] x 100 = -45.76%
Formula
Percentage change = [(505 - 931) / 931] x 100
Subtract the new number by the original number
505 - 931 = -426
-426 ÷ 931 = -0.45757250268528465
-0.45757250268528465 x 100 = -45.76%