-45.54% is the change from 931 to 507
Calculation steps:
[( 507 - 931 ) ÷ 931] x 100 = -45.54%
Formula
Percentage change = [(507 - 931) / 931] x 100
Subtract the new number by the original number
507 - 931 = -424
-424 ÷ 931 = -0.45542427497314714
-0.45542427497314714 x 100 = -45.54%