-47.8% is the change from 931 to 486
Calculation steps:
[( 486 - 931 ) ÷ 931] x 100 = -47.8%
Formula
Percentage change = [(486 - 931) / 931] x 100
Subtract the new number by the original number
486 - 931 = -445
-445 ÷ 931 = -0.47798066595059074
-0.47798066595059074 x 100 = -47.8%